Civil Engineering Mcqs

Two dimensional flow occurs when___________________?

(A) the direction and magnitude of the velocity at all points are identical
(B) the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
(C) the magnitude and direction of the velocity do not change from point to point in the fluid
(D) the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
(E) velocity, depth, pressure, etc. change from point to point in the fluid flow

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For hypersonic flow, the Mach number is___________________?

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

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Pitot tube is used for measurement of__________________?

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According to Bernoulli’s equation for steady ideal fluid flow_______________?

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Choose the wrong statement________________?

(A) Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force
(B) Viscosity is due primarily to interaction between fluid molecules
(C) Viscosity of liquids decreases with in-crease in temperature
(D) Viscosity of liquids is appreciably affected by change in pressure
(E) Viscosity is expressed as poise, stoke, or saybolt seconds

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Choose the wrong statement?

(A) any weight, floating or immersed in a liquid, is acted upon by a buoyant force
(B) Buoyant force is equal to the weight of the liquid displaced
(C) The point through which buoyant force acts, is called the center of buoyancy
(D) Center of buoyancy is located above the center of gravity of the displaced liquid v
(E) Relative density of liquids can be determined by means of the depth of flotation of hydrometer

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Choose the wrong statement ?

(A) The center of buoyancy is located at the center of gravity of the displaced liquid
(B) For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy
(C) If e.g. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions
(D) For stability of floating cylinders or spheres, the e.g. of body must lie below the center of buoyancy
(E) All floating bodies are stable

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Select the correct statement ?

(A) Local atmospheric pressure depends upon elevation of locality only
(B) Standard atmospheric pressure is the mean local atmospheric pressure a* sea level
(C) Local atmospheric pressure is always below standard atmospheric pressure
(D) A barometer reads the difference be-tween local and standard atmospheric pressure
(E) Gauge piessure is equal to atmospheric pressure plus instrument reading

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

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