Mechanical Engineering - Hydraulics and Fluid Mechanics

11. 

The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ρ = Density of the fluid)

A. K
B. K
C. ρ/K
D. K

Answer: Option B

Explanation:

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12. 

The pressure intensity in kN/m2 (or kPa) at any point in a liquid is (where w = Specific weight of liquid, and h = Depth of liquid from the surface)

A. w
B. wh
C. w/h
D. h/w

Answer: Option B

Explanation:

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13. 

The hydraulic gradient line is always parallel to the centre line of the pipe.

A. Correct
B. Incorrect

Answer: Option B

Explanation:

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14. 

Barometer is used to measure

A. velocity of liquid
B. atmospheric pressure
C. pressure in pipes and channels
D. difference of pressure between two points in a pipe

Answer: Option B

Explanation:

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15. 

A closed tank is completely filled with an oil. If it is made to move with a horizontal acceleration, then the pressure at the back end will be more than that at the front end.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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