# Hydraulics and Fluid Mechanics

• ## Free surface of a liquid tends to contract to the smallest possible area due to force of

• A. surface tension
• B. viscosity
• C. friction
• D. cohesion
Explanation:

No answer description available for this question.

• ## For laminar flow in circular pipes, the Darcy’s friction factor f is equal to

• A. 16/Re
• B. 32/ Re
• C. 64/ Re
• D. none of the above where Re is Reynolds number
Explanation:

No answer description available for this question.

• ## Piezometer is used to measure

• A. pressure in pipe, channels etc
• B. atmospheric pressure
• C. very low pressures
• D. difference of pressure between two points
Explanation:

No answer description available for this question.

• ## Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be

• A. 1000 kg
• B. 4000 kg
• C. 2000 kg
• D. 8000 kg
Explanation:

No answer description available for this question.

• ## The flow in which the velocity vector is identical in magnitude and direction at every point, for any given instant, is known as

• A. one dimensional flow
• B. uniform f^w
• D. turbulent flow
Explanation:

No answer description available for this question.

• ## The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as

• A. center of gravity
• B. center of buoyancy
• C. center of pressure
• D. metacentre
Explanation:

No answer description available for this question.

• ## Working principle of dead weight pressure gauge tester is based on

• A. Pascal’s law
• B. Dalton’s law of partial pressure
• C. Newton’s law of viscosity
Explanation:

No answer description available for this question.

• ## If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is

• A. 0.25
• B. 0.50
• C. 1.0
• D. none of the above
Explanation:

No answer description available for this question.

• ## Cavitation is caused by

• A. high velocity
• B. high pressure
• C. weak material
• D. low pressure
Explanation:

No answer description available for this question.