Mechanical Engineering - Hydraulics and Fluid Mechanics

11. 

When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward __________ surface.

A. concave
B. convex

Answer: Option A

Explanation:

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12. 

An orifice is said to be large, if

A. the size of orifice is large
B. the velocity of flow is large
C. the available head of liquid is more than 5 times the height of orifice
D. the available head of liquid is less than 5 times the height of orifice

Answer: Option D

Explanation:

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13. 

The flow in a pipe or channel is said to be uniform when

A. the liquid particles at all sectons have the same velocities
B. the liquid particles at different sections have different velocities
C. the quantity of liquid flowing per second is constant
D. each liquid particle has a definite path

Answer: Option A

Explanation:

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14. 

The density of a liquid in kg/m3 is numerically equal to its specific gravity.

A. True
B. False

Answer: Option A

Explanation:

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15. 

The critical depth meter is used to measure

A. velocity of flow in an open channel
B. depth of flow in an open channel
C. hydraulic jump
D. depth of channel

Answer: Option C

Explanation:

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