civil engineering MCQs – Page 154

Practise multiple-choice questions from civil engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

civil engineering Mcqs
3061. Which of the following instruments is used to measure flow on the application of Bernoullis theorem __________________?
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A. all of the above

B. Venturimeter

C. Orifice plate

D. pitot tube

E. nozzle

3062. The velocity of jet of water travelling out of opening in a tank filled with water is proportional to___________________?
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A. h2

B. h2

C. h3/1.

D. head of water (h)

E. V/T
3063. Barometer is used to measure__________________?
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A. atmospheric pressure

B. difference of pressure between two points

C. pressure in pipes, channels etc.

D. very low pressure

E. rain level

3064. Centre of pressure compared to e.g. is______________?
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A. at same point

B. above or below depending on area of body

C. none of the above

D. above it

E. below it
3065. Surface energy per unit area of a surface is numerically equal to ___________________?
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A. force of adhesion

B. viscosity

C. surface tension

D. force of cohesion

E. atmospheric pressure

3066. Resultant pressure of the liquid in the case of an immersed body acts through _________________?
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A. center of gravity

B. center of pressure

C. metacentre

D. in between e.g. and center of pressure

E. center of buoyancy

3067. Reynolds number is significant in____________________?
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A. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc

B. all of the above

C. none of the above

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

E. supersonics, as with projectile and jet propulsion

3068. For measuring flow by a venturimeter, if should be installed in__________________?
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A. in any direction and in any location

B. horizontal line

C. inclined line with flow downward

D. inclined line with upward flow

E. vertical line

3069. The flow in which conditions do not change with time at any point, is known as _____________________?
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A. one dimensional flow

B. steady flow

C. streamline flow

D. uniform flow

E. turbulent flow

3070. Gradually varied flow is____________________?
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A. true one-dimensional

B. non-steady non-uniform

C. non-steady uniform

D. steady uniform

E. steady non-uniform
3071. Froude number is significant in____________________?
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A. all of the above

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

C. supersonics, as with projectile and jet propulsion

D. none of the above

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

3072. Cavitation is caused by___________________?
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A. weak material

B. low viscosity

C. low pressure

D. high pressure

E. high velocity

3073. The center of pressure of a surface subjected to fluid pressure is the point____________________?
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A. on the surface at which gravitational force acis

B. at which all hydraulic forces meet

C. where pressure equivalent to hydraulic thrust will act

D. on the surface at which resultant pres-sure acts

E. similar to metacentre

3074. Hydrometer is used to determine________________?
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A. relative humidity

B. specific gravity of solids

C. specific gravity of liquids

D. specific gravity of gases

E. density

3075. All the terms of energy in Bernoullis equation have dimension of_______________?
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A. work

B. energy

C. mass

D. time

E. length
3076. A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?
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A. 0.4

B. 0.5

C. 0.5

D. 0.515

E. none of the above

3077. For a body floating in a liquid the normal pressure exerted by the liquid acts at _________________?
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A. e.g. of the body

B. bottom surface of the body

C. all points on the surface of the body

D. all of the above

E. metacentre

3078. Desire lines are plotted in_________________?
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A. traffic volume studies

B. origin and destination studies

C. accident studies

D. speed studies

3079. The camber of road should be approximately equal to___________________?
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A. two times the longitudinal gradient

B. three times the longitudinal gradient

C. longitudinal gradient

D. half the longitudinal gradient
3080. The minimum design speed for hairpin bends in hill roads is taken as_______________?
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A. 50 kmph

B. 40 kmph

C. 20 kmph

D. 30 kmph