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Engineering
Mechanical
ME Set-3
Engineering Mechanics
48

Engineering Mechanics MCQ with Answers

48) The coefficient of friction depends on

area of contact

shape of surfaces

strength of surfaces

nature of surface

Answer is:

nature of surface

Engineering Mechanics MCQ with Answers

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

along the plane

horizontally

vertically

at an angle equal to the angle of friction to the inclined plane

Answer is:

at an angle equal to the angle of friction to the inclined plane

50) The ratio of limiting friction and normal reaction is known as

coefficient of friction

angle of friction

angle of repose

sliding friction

Answer is:

coefficient of friction

Explanation:

The coefficient of friction is defined as the ratio of the limiting friction (F) to the normal reaction (R_N) between the two bodies.

The ratio of limiting friction and normal reaction is known as

51) Which one of the following statements is not correct

the tangent of the angle of friction is equal to coefficient of friction

the angle of repose is equal to angle of friction

the tangent of the angle of repose is equal to coefficient of friction

the sine of the angle of repose is equal to coefficient to friction

Answer is:

the sine of the angle of repose is equal to coefficient to friction

52) On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be

towards the wall at its upper end

away from the wall at its upper end

upwards at its upper end

downwards at its upper end

Answer is:

upwards at its upper end

Engineering Mechanics MCQ with Answers

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48) The coefficient of friction depends on

nature of surface

Engineering Mechanics MCQ with Answers

Related Engineering Mechanics MCQ with Answers

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

at an angle equal to the angle of friction to the inclined plane

50) The ratio of limiting friction and normal reaction is known as

coefficient of friction

51) Which one of the following statements is not correct

the sine of the angle of repose is equal to coefficient to friction

52) On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be

upwards at its upper end

Engineering Mechanics MCQ with Answers