Home Civil Engineering RCC Structure Design Most Important MCQs

RCC Structure Design Most Important MCQs

1 - 4-61. Kinematic viscosity is equal to________________?

dynamic viscosity/density

2 - A balloon lifting in air follows the following principle_________________?

all of the above

3 - A body floats in stable equilibrium________________?

when the metancentre is above e.g

4 - A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will__________________?

remain same

5 - A circular slab subjected to external loading, deflects to form a_________________?

Paraboloid

6 - A column is regarded as long column if the ratio of its effective length and lateral dimension, exceeds_________________?

15

7 - A continuous beam shall be deemed to be a deep beam if the ratio of effective span to overall depth, is______________?

2.5

8 - A fluid in equilibrium can't sustain_________________?

shear stress

9 - A fluid is said to be ideal, if it is________________?

inviscous and incompressible

10 - A force P of 50 N and another force Q of unknown magnitude act at 90° to each other. They are balanced by a force of 130 N. The magnitude of Q is__________________?

120 N

11 - A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal tc__________________?

10 kg

12 - A large Roynold number is indication of_________________?

highly turbulent flow

13 - A liquid would wet the solid, if adhesion forces as compared to cohesion forces are_________________?

more

14 - A metal with specific gravity of o floating in a fluid of same specific gravity a will___________________?

be fully immersed with top surface at fluid surface

15 - A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?

4 x V225 minutes

16 - A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ?

0.045138888889

17 - A one dimensional flow is one which___________________?

involves zero transverse component of flow

18 - A part of the slab may be considered as the flange of the T-beam if__________________?

All the above

19 - A perfect gas_________________?

none of the above

20 - A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction of it volume is under mercury ?

whole of the metal piece will be immersed with its top surface just at mercury level

21 - A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?

0.515

22 - A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is__________________?

0.6

23 - A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is__________________?

6

24 - A pre-cast pile generally used, is______________?

Square with corners chamfered

25 - A pressure of 25 m of head of water is equal to________________?

245 kN/m2

26 - A pre-stressed concrete member is preferred because___________________?

All the above

27 - A pre-stressed rectangular beam which carries two concentrated loads W at L/3 from either end, is provided with a bent tendon with tension P such that central one-third portion of the tendon remains parallel to the longitudinal axis, the maximum dip h is_

WL/3P

28 - A raft foundation is provided if its area exceeds the plan area of the building by______________?

0.5

29 - A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring th

40

30 - A retaining wall and is the horizontal earth pressure, the factor of safety If is weight of against sliding, is_____________?

1.5

31 - A ribbed slab is provided for______________?

All the above

32 - A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ?

2 m/sec

33 - A short column 20 cm × 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm2 and 300 kg/cm2, the Safe load on the column, should not exceed_____________

41,200 kg

34 - A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm2, the area of steel required, is

16 cm2

35 - A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n1. If fc and ft are permissible compressive and tensile stresses, the moment to resistance of the beam, is____________________?

All the above

36 - A singly reinforced concrete beam of 25 cm width and 70 cm effective depth is provided with 18.75 cm2 steel. If the modular ratio (m) is 15, the depth of the neutral axis, is_________________?

30 cm

37 - A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at vater surface. The hydrostatic force on square surface is __________________?

13,500 kg

38 - A streamline is defined as the line ________________?

of equal yelocity in a flow

39 - According to Bernoulli's equation for steady ideal fluid flow_______________?

the energy is constant along a stream-line but may vary across streamlines

40 - According to I.S. : 456 specifications, the safe diagonal tensile stress for M 150 grade concrete, is_____________?

5 kg/cm2

41 - According to I.S. 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than______________?

30 cm

42 - According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than______________?

15 cm

43 - According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to __________________?

weight of the fluid displaced by the body

44 - According to the steel beam theory of doubly reinforced beams______________?

All the above

45 - Alcohol is used in manometers because_____________________?

it can provide longer column due to low density

46 - All the terms of energy in Bernoulli's equation have dimension of_______________?

length

47 - An ideal flow of any fluid must fulfill the following______________?

Continuity equation

48 - An ideal flow of any fluid must satisfy ___________________?

continuity equation

49 - An intermediate T-beam reinforced with two layers of tensile steel with clear cover 13 cm encasted with the floor of a hall 12 metres by 7 metres, is spaced at 3 metres from adjoining beams and if the width of the beam is 20 cm, the breadth of the flange

176 cm

50 - An object having 10 kg mass weighs 9.81kg on a spring balance. The value of 'g' at this place is___________________?

10m/sec2

51 - An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of_________________?

0.75

52 - An open vessel of water is accelerated up an inclined plane. The free water surface will___________________?

make an angle in opposite direction to inclination of inclined plane

53 - An R.C.C beam of 25 cm width has a clear span of 5 metres and carries a U.D.L. of 2000 kg/m inclusive of its self weight. If the lever arm of the section is 45 cm., the beam is__________________?

Safe in shear

54 - An under-reinforced section means_________________?

Steel will yield first

55 - As per I.S. 456 – 1978, the pH value of water shall be_______________?

Not less than 6

56 - As per IS : 456, the reinforcement in a column should not be less than________________?

0.8% and not more than 8% of cross-sectional area

57 - As the percentage of steel increases________________?

Depth of neutral axis increases

58 - At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be_______________?

could be any value

59 - Barometer is used to measure__________________?

atmospheric pressure

60 - Based on punching shear consideration, the overall depth of a combined footing under a column A, is_______________?

(Perimeter of column A × Safe punching stress)/(Load on column A + Upward pressure × Area of the column)

61 - bending moment of a simply supported slab is M Kg.cm, the effective depth of the If the maximum slab is (where Q is M.R. factor)________________?

(M/100Q)

62 - Bernoulli equation deals with the law of conservation of____________________?

energy

63 - Bottom bars under the columns are extended into the interior of the footing slab to a distance greater than____________?

42 diameters from the outer edge of the column

64 - Buoyant force is___________________?

the resultant force on a body due to the fluid surrounding it

65 - By over-reinforcing a beam, the moment of resistance can be increased not more than________________?

0.25

66 - Cantilever retaining walls can safely be used for a height not more than_______________?

6 m

67 - Capillary action is due to the__________________?

all of the above

68 - carrying a uniformly distributed load per metre length is suspended at two A pile of length points, the maximum, B.M. at the centre of the pile or at the points of suspension, is_________________?

WL²/47

69 - Cavitation is caused by___________________?

low pressure

70 - Cavitation will begin when______________________?

the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid

71 - Center of buoyancy is the___________________?

centroid of the displaced volume of fluid

72 - Center of pressure on an inclined plane is______________________?

below the centroid

73 - Centre of pressure compared to e.g. is______________?

below it

74 - Choose the wrong statement ?

All floating bodies are stable

75 - Choose the wrong statement?

Center of buoyancy is located above the center of gravity of the displaced liquid v

76 - Choose the wrong statement___________________?

he vertical component passes through the center of pressure of the volume

77 - Density of water is maximum at ___________________?

100°C

78 - Design of a two way slab simply supported on edges and having no provision to prevent the corners from lifting, is made by_________________?

Rankine Grashoff formula

79 - Differential monometer is used to measure _______________________?

difference of pressure between two points

80 - Dimensions of a beam need be changed if the shear stress is more than_______________?

20 kg/cm2

81 - Dimensions of surface tension are_________________?

MlL°T2

82 - Distribution of shear intensity over a rectangular section of a beam, follows_________________?

A parabolic curve

83 - Distribution reinforcement in a simply supported slab, is provided to distribute_______________?

All the above

84 - During the opening of a valve in a pipe line, the flow is___________________?

unsteady

85 - Dynamic viscosity of most of the gases with rise in temperature___________________?

increases

86 - Dynamic viscosity of most of the liquids with rise in temperature____________________?

decreases

87 - effective depth and depth of the neutral axis respectively of a singly reinforced If d and n are the beam, the lever arm of the beam, is_________________?

d – n/3

88 - Euler's dimensionless number relates the following_______________?

pressure force and inertial force

89 - Falling drops of water become spheres due to the property of ________________?

surface tension

90 - Flow occurring in a pipeline when a valve is being opened is ______________________?

unsteady

91 - Flow of water in a pipe about 3 meters in diameter can be measured by_________________?

pitot tube

92 - Fluid is a substance that_______________?

cannot remain at rest under action of any shear force

93 - Fluid is a substance which offers no resistance to change of_________________?

shape

94 - For a body floating in a liquid the normal pressure exerted by the liquid acts at _________________?

all points on the surface of the body

95 - For a circular slab carrying a uniformly distributed load, the ratio of the maximum negative to maximum positive radial moment, is___________________?

2

96 - For a floating body to be in equilibrium __________________?

all of the above

97 - For a floating body to be in stable equilibrium, its metacentre should be_________________ ?

above the center of gravity

98 - For a number of columns constructed in a rcjw, the type of foundation provided, is_______________?

Strip

99 - For hypersonic flow, the Mach number is___________________?

greater than 4

100 - For initial estimate for a beam design, the width is assumed__________________?

1/30th of span

101 - For M 150 grade concrete (1:2:4) the moment of resistance factor is_________________?

8.5

102 - For M 150 mix concrete, according to I.S. specifications, local bond stress, is_________________?

10 kg/cm 2

103 - For measuring flow by a venturimeter, if should be installed in__________________?

in any direction and in any location

104 - For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its overall depth does not exceed________________?

20

105 - For pipes, laminar flow occurs when Roynolds number is__________________?

less than 2000

106 - For pipes, turbulent flow occurs when Reynolds number is_________________?

more than 4000

107 - For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal__________________?

all the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity

108 - For stairs spanning l metres longitudinally between supports at the bottom and top of a flight carrying a load w per unit horizontal area, the maximum bending moment per metre width, is_______________?

wl²/16

109 - For the design of a simply supported T-beam the ratio of the effective span to the overall depth of the beam is limited to______________?

20

110 - For very great pressures, viscosity of moss gases and liquids __________________?

shows erratic behaviour

111 - foundation is assumed as The weight of a_____________?

10% of wall weight

112 - Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the______________?

force of cohesion

113 - Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the_______________?

force of cohesion

114 - Free surface of a liquid tends to contract to the smallest possible area due to force of _________________?

surface tension

115 - Froude number is significant in____________________?

simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship's hulls

116 - General energy equation holds for_________________?

non-uniform flow

117 - Gradually varied flow is____________________?

steady non-uniform

118 - Hot wire anemometer is used to measure_______________?

velocity of gas

119 - Hydrometer is used to determine________________?

specific gravity of liquids

120 - If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its_______________?

specific gravity

121 - If a bent tendon is required to balance a concentrated load W at the centre of the span L, the central dip h must be at least________________?

WL/4P

122 - If a rectangular pre-stressed beam of an effective span of 5 meters and carrying a total load 3840 kg/m, is designed by the load balancing method, the central dip of the parabolic tendon should be_________________?

10 cm

123 - If C is creep coefficient, f is original pre-stress in concrete, m is modular ratio, E is Young's modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is________________?

(C – 1)mf + eE

124 - If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be_________________?

lower than the surface of liquid

125 - If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is________________?

150 cm

126 - If diameter of a reinforcement bar is d, the anchorage value of the hook is_______________?

16d

127 - If is the net upward pressure on a square footing of side for a square column of side , the maximum bending moment is given by_________________?

B.M = pb (b – a)²/8

128 - If is the overall height of a retaining wall retaining a surcharge, the width of the base slab usually provided, is________________?

0.7 H

129 - If is the uniformly distributed load on a circular slab of radius maximum positive radial moment at its centre, is__________________?

WR²/16

130 - If K is a constant depending upon the ratio of the width of the slab to its effective span l, x is the distance of the concentrated load from the nearer support, bw is the width of the area of contact of the concentrated load measured parallel to the supp

Kx (1 – x/l) + bw

131 - If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water___________________?

51 cm

132 - If no resistance is encountered by displacement, such a substance is known as___________________?

ideal fluid

133 - If Sb, is the average bond stress on a bar of diameter subjected to maximum stress , the length of the embedment is given by_____________?

l = dt/4Sb

134 - If T and R are tread and rise respectively of a stair, then_______________?

2R + T = 60

135 - If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm”, the pressure at a depth of 50 m below the oil surface will be _____________________?

6 meters of water Column

136 - If the average bending stress is 6 kg/cm2 for M 150 grade concrete, the length of embedment of a bar of diameter d according to I.S. 456 specifications, is__________________?

58 d

137 - If the depth of actual neutral axis of a doubly reinforced beam______________?

All the above

138 - If the diameter of longitudinal bars of a square column is 16 mm, the diameter of lateral ties should not be less than____________________?

5 mm

139 - If the diameter of the main reinforcement in a slab is 16 mm, the concrete cover to main bars is_____________?

16 mm

140 - If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment________

WL/6

141 - If the length of an intermediate span of a continuous slab is 5m, the length of the end span is kept_______________?

4.5 m

142 - If the loading on a pre-stressed rectangular beam, is uniformly distributed, the tendon to be provided should be_______________?

Parabolic with convexity downward

143 - If the maximum dip of a parabolic tendon carrying tension P is h and the effective length of the pre-stressed beam is L, the upward uniform pressure will be________________?

8hp/l²

144 - If the modular ratio is , steel ratio is and overall depth of a beam is , the depth of the critical neutral axis of the beam, is___________________?

[m/(m + r)] d

145 - If the permissible compressive stress for a concrete in bending is C kg/m2, the modular ratio is_____________?

2800/3C

146 - If the ratio of long and short spans of a two way slab with corners held down is r, the actual reduction of B.M. is given by

(5/6) (r²/1 + r4) M

147 - If the ratio of the span to the overall depth does not exceed 10, the stiffness of the beam will ordinarily be satisfactory in case of a__________________?

Cantilever beam

148 - If the resultant of two forces has the same magnitude as either of the force, then the angle between the two forces is____________________?

120°

149 - If the sides of a slab simply supported on edges and spanning in two directions are equal, the maximum bending moment is multiplied by_________________?

0.5

150 - If the size of a column is reduced above the floor, the main bars of the columns, are_____________?

All the above

151 - If the surface of liquid is convex, men_________________?

cohesion pressure is increased

152 - If the tendon is placed at an rectangular beam (sectional top edge)________________?

Is decreased by Pe/Z

153 - If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is________________?

3WR²/16

154 - If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be____________________?

wh

155 - If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions, then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat

WL/10 (L – 2D/3)²

156 - In a beam the local bond stress Sb, is equal to_______________?

Shear force/(Leaver arm × Total perimeter of reinforcement)

157 - In a combined footing for two columns carrying unequal loads, the maximum hogging bending moment occurs at

A point of zero shear force

158 - In a combined footing if shear stress does not exceed 5 kg/cm2, the nominal stirrups provided are________________?

8 legged

159 - In a combined footing if shear stress exceeds 5 kg/cm2, the nominal stirrups provided are______________?

12 legged

160 - In a doubly-reinforced beam if and the effective depth and is depth of critical neutral axis, the following relationship holds good______________?

mc/t = n/(d – n)

161 - In a forced vortex, the velocity of flow everywhere within the fluid is__________________?

non-zero finite

162 - In a free vortex motion, the radial component of velocity everywhere is ________________?

zero

163 - In a pre-stressed beam carrying an external load W with a bent tendon is having angle of -stressed load P. The net downward load at the centre is_________________?

W – 2P

164 - In a pre-stressed member it is advisable to use________________?

High strength concrete and high tensile steel

165 - In a simply supported slab, alternate bars are curtailed at________________?

1/7th of the span

166 - In a singly reinforced beam, if the permissible stress in concrete reaches earlier than that in steel, the beam section is called________________?

Over reinforced section

167 - In a singly reinforced beam, the effective depth is measured from its compression edge to_________________?

Tensile reinforcement

168 - In a static fluid__________________?

only normal stresses can exist

169 - In an immersed body, center of pressure is ____________________?

below be center of gravity

170 - In an isothermal atmosphere, the pressure__________________?

varies in the same way as the density

171 - In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength______________?

400 kg/cm2

172 - In order that flow takes place between two points in a pipeline, the differential pressure between thes^ points must be more than_________________?

all of the above

173 - In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 9. Sensitivity of inclined tube to sensitivity of U-tube is equal to_________________?

sin 9

174 - In testing a pile by load test, pile platform is loaded with one and half times the design load and a maximum settlement is noted. The load is gradually removed and the consequent rebound is measured. For a safe pile, the net settlement (i.e. total settle

25 mm

175 - In the case of steady flow of a fluid, the acceleration of any fluid particle is__________________?

zero

176 - intensity of pressure at a depth h on a block of earth weighing w per unit If p1 is the vertical______________?

wh (1 – sin )/(1 + ) )

177 - is the pre- stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The minimum stress on the beam subjected to a maximum bending moment is________________?

f = (P/A) – (M/Z)

178 - is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The maximum stress in the beam, subjected to a maximum bending moment , is_________________?

f = (P/A) + (M/Z)

179 - Kinematic viscosity is dependent upon________________?

density

180 - Liquids transmit pressure equally in all the directions. This is according to_________________?

Pascal's law

181 - Liquids________________?

none of the above

182 - longitudinal bars and lateral stirrups, is__________________?

Stress in concrete × area of concrete + Stress in steel × area of steel

183 - Mach number is significant in___________________?

supersonics, as with projectiles and jet propulsion

184 - Mercury does not wet glass. This is due to property of liquid known as_________________?

surface tension

185 - Metacentre is the point of intersection of _________________________?

buoyant force and the center line of body

186 - Metacentric height is given as the distance between_______________?

the center of gravity of the body andthe meta center

187 - Metacentric height is the distance between the metacentre and___________________?

center of gravity

188 - Minimum spacing between horizontal parallel reinforcement of different sizes, should not be less than________________?

One diameter of thicker bar

189 - mutually perpendicular principal stresses acting on a soil mass, the normal stress If p1 and p2 are________________?

[(p p p – p cos 2

190 - Newton's law of viscosity is a relationship between________________?

shear stress anctthejiate of angular distortion

191 - Non uniform flow occurs when ____________________?

velocity, depth, pressure, etc. change from point to point in the fluid flow

192 - Normal depth in open channel flow is the depth of flow corresponding to_______________?

uniform flow

193 - On an absolutely rigid foundation base, the pressure will________________?

Not be uniform

194 - On piles, the drop must be at least_______________?

120 cm

195 - Operation of McLeod gauge used for low pressure measurement is based on the principle of_____________________?

Boyle's law

196 - per unit run exerted by the Total pressure on the vertical face of a retaining wall of height retained earth weighing per unit volume, is___________________?

wh² [(1 – )/2(1 + sin )]

197 - Pick up the assumption for the design of a pre-stressed concrete member from the following_______________?

All the above

198 - Pick up the correct statement from the following?

A pile is a slender member which transfers its load to the surrounding soil

199 - Pick up the incorrect statement from the following. The intensity of horizontal shear stress at the elemental part of a beam section, is directly proportional to__________________?

Moment of the beam section about its neutral axis

200 - Pick up the incorrect statement from the following: Tensile reinforcement bars of a rectangular beam_______________?

Are bent down at suitable places to serve as shear reinforcement

201 - Pick up the incorrect statement from the following?

None of these

202 - Pick up the true statement from the following?

All the above

203 - Piles are usually driven by________________?

All the above

204 - Pitot tube is used for measurement of__________________?

velocity

205 - Poise is the unit of________________?

viscosity

206 - Post tensioning system_______________?

None of these

207 - Practical fluids____________________?

possess all the above properties

208 - Pressure of the order of 10″' torr can be measured by_______________ ?

ionisastion gauge

209 - Principle of similitude forms the basis of__________________?

designing models so that the result can be converted to prototypes

210 - Property of a fluid by which its own molecules are attracted is called ________________?

cohesion

211 - Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called________________?

adhesion

212 - Rain drops are spherical because of____________________?

surface tension forces

213 - Ratio of inertia force to elastic force is known as _____________________?

Mach number

214 - Ratio of inertia force to surface Jension is known as ________________________?

Weber's number

215 - Resultant pressure of the liquid in the case of an immersed body acts through _________________?

center of pressure

216 - Reynolds number is significant in____________________?

full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc

217 - Rotameter is a device used to measure____________________?

flow

218 - Select the correct statement ?

Standard atmospheric pressure is the mean local atmospheric pressure a* sea level

219 - Select the correct statement ?

The body centrode rolls on the space centrode

220 - Spacing of stirrups in a rectangular beam, is__________________?

Increased at the centre of the beam

221 - Specific weight of sea water is more that of pure water because it contains ________________?

all of the above

222 - Specific weight of water in S.I. units is equal to_________________?

9.81 xlO3 N/m3

223 - Steady flow occurs when____________________?

the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

224 - Steel bars are generally connected together to get greater length than the standard length by providing_______________?

All the above

225 - Steel beam theory is used for_______________?

Doubly reinforced beams ignoring compressive stress in concrete

226 - Surface energy per unit area of a surface is numerically equal to ___________________?

surface tension

227 - Surface energy per unit area of a surface is numerically equal to___________________?

surface tension

228 - Surface tension has the units of____________________?

new tons/m

229 - The advantage of reinforced concrete, is due to_______________?

All the above

230 - The allowable tensile stress in mild steel stirrups, reinforced cement concrete, is_______________?

1400 kg/cm2

231 - The amount of reinforcement for main bars in a slab, is based upon___________________?

Maximum bending moment

232 - The anchorage value of a hook is assumed sixteen times the diameter of the bar if the angle of the bend, is___________________?

All the above

233 - The angle of contact in case of a liquid depends upon____________________?

both of die above

234 - The angle of internal friction of soil mass is the angle whose_______________?

Tangent is equal to the rate of the maximum resistance to sliding on any internal inclined plane to the normal pressure acting on the plane

235 - The angle of repose of a soil is the maximum angle which the outer face of the soil mass makes_______________?

With the horizontal

236 - The angles between two forces to make their resultant a minimum and a maximum respectively are__________________?

180° and 0°

237 - The atmospheric pressure with rise in altitude decreases____________________?

first slowly and then steeply

238 - The breadth of a ribbed slab containing two bars must be between______________?

8 cm to 10 cm

239 - The bulk modulus of elasticity with increase in pressure___________________?

increases

240 - The buoyancy depends on__________________?

mass of liquid displaced

241 - The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately_______________?

30 mm

242 - The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately____________________?

30 mm

243 - The center of gravity of the volume of the liquid displaced by an immersed body is called________________?

center of buoyancy

244 - The center of pressure of a surface subjected to fluid pressure is the point____________________?

on the surface at which resultant pres-sure acts

245 - The conditions for the stable equilibrium of a floating body are_______________?

all the above are correct

246 - The continuity equation is connected with_______________?

conservation of mass

247 - The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is ______________________?

3.0 m

248 - The design of heel slab of a retaining wall is based on the maximum bending moment due to______________?

All the above

249 - The diameter of longitudinal bars of a column should never be less than_____________?

12 mm

250 - The difference of pressure between the inside and outside of a liquid drop is_____________?

p = 2T/r

251 - The difference of pressure between the inside and outside of a liquid drop is________________?

p = 2T/r

252 - The effective span of a simply supported slab, is_______________?

Clear distance between the inner faces of the walls plus twice the thickness of the wall

253 - The effective width of a column strip of a flat slab, is_______________?

Half the width of the panel

254 - The equation of continuity holds good when the flow __________________?

all of the above

255 - The flow in which conditions do not change with time at any point, is known as _____________________?

steady flow

256 - The flow in which each liquid particle has a definite path and their paths do not cross each other is called____________________?

streamline flow

257 - The flow in which the particles of a fluid attain such velocities that vary from point to point in magnitude and direction as well as from instant to instant, is known as_________________?

turbulent flow

258 - The flow in which the velocity vector is identical in magnitude and direction at every point, for any given instant, is known as___________________?

uniform flow

259 - The flow which neglects changes in a transverse direction is known as ____________________?

one dimensional flow

260 - The fluid forces considered in the Navier Stokes equation are__________________?

gravity, pressure and viscous

261 - The horizontal component of buoyant force is__________________?

zero

262 - The horizontal portion of a step in a stairs case, is known as_________________?

Tread

263 - The increase of temperature results in_________________?

decrease in viscosity of liquid

264 - The length of lap in tension reinforcement should not be less than the bar diameter × (actual tension / four times the permissible average bond stress) if it is more than_______________?

30 bar diameters

265 - The length of the lap in a compression member is kept greater than bar diameter x (Permissible stress in bar / Five times the bond stress) or____________________?

24 bar diameters

266 - The length of the straight portion of a bar beyond the end of the hook, should be at least_______________?

Seven times the diameter

267 - The line of action of the buoyant force acts through the centroid of the ___________________?

displaced volume of the fluid

268 - The live load to be considered for an accessible roof, is________________?

150 kg/m 2

269 - The live load to be considered for an inaccessible roof, is______________?

75 kg/m2

270 - The maximum area of tension reinforcement in beams shall not exceed_______________?

0.04

271 - The maximum diameter of a bar used in a ribbed slab, is______________?

22 mm

272 - The maximum permissible size of aggregates to be used in casting the ribs of a slab, is______________?

10 mm

273 - The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is_________________?

35

274 - The maximum shear stress (q) in concrete of a reinforced cement concrete beam is_____________?

Shear force/(Lever arm × Width)

275 - The maximum shear stress (qmax) in a rectangular beam is_______________?

1.50 times the average

276 - The minimum cube strength of concrete used for a pre-stressed member, is________________?

350 kg/cm2

277 - The minimum number of main steel bars provided in R.C.C________________?

All the above

278 - The minimum thickness of a flat slab is taken_________________?

All the above

279 - The minimum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of___________________?

25 mm

280 - The neutral axis of a T-beam exists_________________?

All the above

281 - The normal stress in a fluid will be constant in all directions at a point only if_________________?

it is at rest.

282 - The normal stress is same in all directions at a point in a fluid ___________________?

when there is no motion of one fluid layer relative to an adjacent layer

283 - The number of treads in a flight is equal to_______________?

Risers minus one

284 - The peoperty by virtue of which a liquid opposes relative motion between its different layers is called_________________?

viscosity

285 - The percentage of minimum reinforcement of the gross sectional area in slabs, is________________?

0.0015

286 - The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as____________________?

center of pressure

287 - The pressure at a point in a fluid will not be same in all the directions when the fluid is________________?

viscous and moving

288 - The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to________________?

9810 Pa

289 - The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm”. The pressure at 2.5 m below the oil surface will be ___________________?

3 meters of water column

290 - The process of diffusion of one liquid into the other through a semi-permeable membrane is called _______________?

osmosis

291 - The property of a fluid which enables it to resist tensile stress is known as________________?

cohesion

292 - The radius of a bar bend to form a hook, should not be less than_______________?

Twice the diameter

293 - The ratio of absolute viscosity to mass density is known as____________________?

kinematic viscosity

294 - The region between the separation streamline and the boundary surface of the solid body is known as_________________?

wake

295 - The reinforced concrete beam which has width 25 cm, lever arm 40 cm, shear force 6t/cm2, safe shear stress 5 kg/cm2 and B.M. 24 mt________________?

Is unsafe in shear

296 - The resultant of all normal pressures acts_________________?

vertically upwards

297 - The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then_________________?

Q = R

298 - The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to____________________?

Archimedes' principle

299 - The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called___________________?

buoyancy

300 - The resultant upward pressure of the fluid on an immersed body is called_________________?

buoyancy

301 - The resultant upward pressure of the fluid on an immersed body is called__________________?

buoyancy

302 - The rise or depression of liquid in a tube due to surface tension wim increase in size of tube will_______________?

decrease

303 - The section of a reinforced beam where most distant concrete fibre in compression and tension in steel attains permissible stresses simultaneously, is called_________________?

All the above

304 - The self-weight of the footing, is_____________?

Not considered for calculating the upward pressure on footing

305 - The spacing of transverse reinforcement of column is decided by the following consideration_______________?

All the above

306 - The specific weight of water is 1000 kg/m” _______________?

all the above

307 - The speed of sound in a ideal gas varies directly as its ______________?

absolute temperature

308 - The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is_______________?

53.5

309 - The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm 2 respectively. If m = 15, the depth of its neutral axis is_______________?

30 cm

310 - The stress-strain relation of the newtoneon fluid is________________?

linear

311 - The surface tension of mercury at normal temperature compared to that of water is____________________?

more

312 - The system in which high tensile alloy steel bars (silica manganese steel) are used as prestressing tendons, is known as________________?

Lee-McCall system

313 - The tendency of a liquid surface to contract is due to the following property_________________?

surface tension

314 - The thickness of base slab of a retaining wall generally provided, is_____________?

Width of the stem at the bottom

315 - The thickness of the topping of a ribbed slab, varies between________________?

5 cm to 8 cm

316 - The time oscillation of a floating body with increase in metacentric height will be________________?

lower

317 - The total energy of each particle at various places in the case of perfect incompres sible fluid flowing in continuous sream________________?

remains constant

318 - The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if __________________?

all of the above

319 - The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be___________________?

2000 kg

320 - The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be____________________?

2000 kg

321 - The two important forces for a floating body are___________________?

buoyancy, gravity

322 - The units of dynamic or absolute viscosity are_______________?

newton-sec per meter

323 - The units of kinematic viscosity are_______________?

metres2 per sec

324 - The units of viscosity are__________________?

kg sec/metre

325 - The upper surface of a weir over which water flows is known is________________?

sill

326 - The value of mass density in kgsecVm4 for water at 0°C is_______________?

101.9

327 - The vapour pressure over the concave surface is________________?

less man the vapour pressure over the plane surface

328 - The vapour pressure over the concave surface is__________________?

less man the vapour pressure over the plane surface

329 - The velocity of jet of water travelling out of opening in a tank filled with water is proportional to___________________?

V/T

330 - The volumetric change of the fluid caused by a resistance is known as_________________?

compressibility

331 - The weight of reinforced concrete, is generally taken as______________?

2400 kg/m3

332 - The width of the flange of a T-beam should be less than_________________?

Least of the above

333 - The width of the flange of a T-beam, which may be considered to act effectively with the rib depends upon____________________?

All the above

334 - The width of the rib of a T-beam, is generally kept between_______________?

1/3 to 2/3 of rib depth

335 - The Young's modulus of elasticity of steel, is__________________?

275 KN/mm2

336 - Though the effective depth of a T-beam is the distance between the top compression edge to the centre of the tensile reinforcement, for heavy loads, it is taken as__________________?

1/12th of the span

337 - To avoid an interruption in the flow of a syphon, an air vessel is provided______________?

at the summit

338 - To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than_______________?

6.4 m above the hydraulic gradient

339 - To ensure that the hogging bending moment at two points of suspension of a pile of length L equals the sagging moment at its centre, the distances of the points of suspension from either end, is________________?

0.207 L

340 - To ensure uniform pressure distribution, the thickness of the foundation, is__________________?

Decreased gradually towards the edge

341 - To have pressure wholly compressive under the base of a retaining wall of width b, the resultant of the weight of the wall and the pressure exerted by the retained, earth should have eccentricity not more than________________?

b/6

342 - Top bars are extended to the projecting parts of the combined footing of two columns Ldistance apart for a distance of_______________?

0.1 L from the centre edge of column

343 - Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be ___________________?

1000 kg

344 - Total pressure on the vertical face of a retaining wall of height h acts parallel to free surface and from the base at a distance of_____________________?

h/3

345 - True one-dimensional flow occurs when___________________?

the direction and magnitude of the veiocity at all points are identical

346 - Two dimensional flow occurs when___________________?

the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

347 - Two pipe systems can be said to be equivalent, when the following quantites are same______________?

friction loss and flow

348 - Uniform flow occurs when___________________?

the magnitude and direction of the velocity do not change from point to point in the fluid

349 - Uniform flow occurs when____________________?

size and shape of the cross section in a particular length remain constant

350 - When a body floating in a liquid, is displaced slightly, it oscillates about ___________________?

metacentre

351 - When the flow parameters at any given instant remain same at every point, then flow is said to be____________________?

uniform

352 - Which of the following instrument can be used for measuring speed of a submarine moving in deep sea_________________?

pitot tube

353 - Which of the following instrument can be used for measuring speed of an aeroplane ________________?

pitot tube

354 - Which of the following instruments is used to measure flow on the application of Bernoulli's theorem __________________?

all of the above

355 - Which of the following is dimensionless ________________?

specific gravity

356 - Which of the following is the unit of kinematic viscosity _________________?

stoke

357 - Which of the following manometer has highest sensitivity __________________?

micro-manometer with water

358 - Which of the following meters is not associated with viscosity__________________?

Orsat

359 - With usual notations the depth of the neutral axis of a balanced section, is given by______________?

mc/t = n/ (d – n)

360 - Working principle of dead weight pressure gauge tester is based on __________________?

Pascal's law

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