Mechanical Engineering - Hydraulics and Fluid Mechanics

11. 

Reynold's number is the ratio of inertia force to

A. pressure force
B. elastic force
C. gravity force
D. viscous force

Answer: Option D

Explanation:

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12. 

The unit of dynamic viscosity in S.I. units is

A. N-m/s2
B. N-s/m2
C. poise
D. stoke

Answer: Option B

Explanation:

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13. 

Bulk modulus of a fluid __________ as the pressure increases.

A. remains same
B. decreases
C. increases

Answer: Option C

Explanation:

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14. 

The hydraulic gradient line may be above or below the centre line of the pipe.

A. True
B. False

Answer: Option B

Explanation:

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15. 

A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is

A. 2.89 kN
B. 8.29 kN
C. 9.28 kN
D. 28.9 kN

Answer: Option B

Explanation:

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