Mechanical Engineering - Hydraulics and Fluid Mechanics

11. 

A flow whose streamline is represented by a curve, is called

A. one-dimensional flow
B. two-dimensional flow
C. three-dimensional flow
D. four-dimensional flow

Answer: Option B

Explanation:

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12. 

When the Mach number is less than unity, the flow is called

A. sub-sonic flow
B. sonic flow
C. super-sonic flow
D. hyper-sonic flow

Answer: Option A

Explanation:

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13. 

When the end contractions of the weir are suppressed, then number of end contractions (n) are taken as zero

A. Agree
B. Disagree

Answer: Option A

Explanation:

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14. 

A flow is called hyper-sonic, if the Mach number is

A. less than unity
B. unity
C. between 1 and 6
D. none of these

Answer: Option D

Explanation:

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15. 

The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is

A.
B.
C.
D.

Answer: Option B

Explanation:

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