civil engineering MCQs – Page 308

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 Review each marked answer and report any item that may be outdated or unclear.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
6141. 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 ?
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A. 1:V5?

B. 1:25

C. 01:02.5

D. 1 : 5

E. 1 : 53/2

6142. Normal depth in open channel flow is the depth of flow corresponding to_______________?
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A. critical flow

B. uniform flow

C. unsteady flow

D. laminar flow

E. steady flow

6143. A body floats in stable equilibrium________________?
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A. when its e.g. is below its center of buoyancy

B. when the metancentre is above e.g

C. when its meatcentric height is zero

D. none of the above

E. metacentre has nothing to do with position of e.g. for determining stability

6144. The units of kinematic viscosity are_______________?
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A. newton-sec per meter

B. kg sec/meter

C. newton-sec per meter

D. none of the above

E. metres2 per sec
6145. Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the______________?
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A. force of diffusion

B. force of friction

C. force of adhesion

D. force of cohesion

E. none of die above

6146. The line of action of the buoyant force acts through the centroid of the ___________________?
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A. volume of the floating body

B. submerged body

C. displaced volume of the fluid

D. none of the above

E. volume of the fluid vertically above the body

6147. 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_________________?
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A. tan 9

B. sin 9

C. sin 9

D. casS

E. cos 9

6148. 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. metacentre

E. all of the above

6149. Flow occurring in a pipeline when a valve is being opened is ______________________?
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A. rotational

B. steady

C. vortex

D. laminar

E. unsteady