Hydraulics And Fluid Mechanics MCQ Questions & Answers | Mechanical Engineering

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 increase in temperature

D. Viscosity of liquids is appreciably affected by change in pressure

A. The horizontal component of the hydrostatic force on any surface is equal to the normal force on the vertical projection of the surface

B. The horizontal component acts through the center of pressure for the vertical projection

C. The vertical component of the hydrostatic force on any surface is equal to the weight of the volume of the liquid above the area

D. The vertical component passes through the center of pressure of the volume

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

A. An equivalent pipe is treated as an ordinary pipe for all calculations

B. The length of an equivalent pipe is equal to that of a compound pipe

C. The discharge through an equivalent pipe is equal to that of a compound pipe

D. The diameter of an equivalent pipe is equal to that of a compound pipe

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 C.G. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions

D. All floating bodies are stable

A. $$\frac{{\text{P}}}{{\sqrt {\text{H}} }}$$

B. $$\frac{{\text{P}}}{{\text{H}}}$$

C. $$\frac{{\text{P}}}{{{{\text{H}}^{\frac{3}{2}}}}}$$

D. $$\frac{{\text{P}}}{{{{\text{H}}^2}}}$$

A. Equal to

B. One-third

C. Two-third

D. Three-fourth

A. Running full

B. Running free

C. Partially running full

D. Partially running free

A. 1

B. 5

C. 7

D. 6

A. 1

B. 1.2

C. 0.8

D. 0.75