Mechanical Engineering - Hydraulics and Fluid Mechanics

16. 

When the flow in an open channel is gradually varied, the flow is said to be

A. steady uniform flow
B. steady non-uniform flow
C. unsteady uniform flow
D. unsteady non-uniform flow

Answer: Option B

Explanation:

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17. 

When the Mach number is equal to unity, the flow is called sonic flow.

A. True
B. False

Answer: Option A

Explanation:

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18. 

The total pressure on the bottom of a closed cylindrical vessel completely filled up with a liquid is the sum of the total centrifugal pressure and the weight of the liquid in the vessel.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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19. 

A weir, generally, used as a spillway of a dam is

A. narrow crested weir
B. broad crested weir
C. Ogee weir
D. submerged weir

Answer: Option C

Explanation:

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20. 

A thick liquid like a syrup has a __________ viscosity than a light liquid like water.

A. lesser
B. greater

Answer: Option B

Explanation:

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