Engineering Mechanics - Interview Questions | Exam2Win

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41. 59. The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be

A. r/2

B. 2r/3

C. r/A

D. 3r/2

E. 3r/A.

Explanation:

42. 70. Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction

A. along the plane

B. horizontally

C. vertically

D. at an angle equal to the angle of fric�tion to the inclined plane

E. unpredictable.

Explanation:

43. 73. On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be

A. towards the wall at its upper end

B. away from the wall at its upper end

C. upwards at its upper end

D. downwards at its upper end

E. none of the above.

Explanation:

44. 92. Tangent of angle of friction is equal to

A. kinetic friction

B. limiting friction

C. angle of repose

D. coefficient of friction

E. friction force.

Explanation:

45. 18. Which of the following is not the unit of work, energy and heat ?

A. kcal

B. kg m

C. kWhr

D. hp

E. hp hr.

Explanation: