Mechanical Engineering - Hydraulics and Fluid Mechanics

1. 

The property of a liquid which enables it to resist tensile stress is called its surface tension.

A. Agree
B. Disagree

Answer: Option A

Explanation:

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2. 

The magnitude of water hammer depends upon the

A. elastic properties of the pipe material
B. elastic properties of the liquid flowing through the pipe
C. speed at which the valve is closed
D. all of the above

Answer: Option D

Explanation:

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3. 

The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.

A. plus
B. minus

Answer: Option A

Explanation:

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4. 

The dynamic viscosity of gases __________ with rise in temperature.

A. remain unaffected
B. increases
C. decreases

Answer: Option B

Explanation:

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5. 

A flow in which the quantity of liquid flowing per second is constant, is called __________ flow.

A. steady
B. streamline
C. turbulent
D. unsteady

Answer: Option A

Explanation:

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