Civil Engineering - Applied Mechanics

21. 

Power developed by a torque, is

A. NT kg m/min
B.
C.
D. all the above.

Answer: Option D

Explanation:

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22. 

From a solid cylinder of height 8 cm and radius 4 cm, a right circular cone is scooped out on the same base and having the same height as that of the cylinder. The c.g. of the remainder is at a height of

A. 4.5 cm
B. 5.0 cm
C. 5.25 cm
D. 5.5 cm.

Answer: Option B

Explanation:

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23. 

The unit of moments in M.K.S system, is

A. kgm
B. kg/m2
C. kg/sec2
D. kg/sec.

Answer: Option A

Explanation:

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24. 

The rotational velocity of a satellite is increased by 450 m per second if its launch is done from equator

A. eastward
B. northward
C. westward
D. southward
E. upward.

Answer: Option A

Explanation:

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25. 

On a mass m describing a circular path of radius r, the centrifugal force

A. acts tangentially to the circular path
B. acts towards the centre of rotation
C. acts away from the centre of rotation
D. is

Answer: Option B

Explanation:

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