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
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
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
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
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