45) If a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be

maximum

minimum

zero

infinity

Answer is:

zero

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46) The resultant of the following three couples 20 kg force, 0.5 m arm, $ ve sense 30 kg force, 1 m arm, - ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be

20 kg, - ve sense

20 kg, + ve sense

10 kg, + ve sense

10 kg, - ve sense

Answer is:

20 kg, - ve sense

47) Angle of friction is the

angle between normal reaction and the resultant of normal reaction and the limiting friction

ratio of limiting friction and normal reaction

the ratio of minimum friction force to the friction force acting when the body is just about to move

the ratio of minimum friction force to friction force acting when the body is in motion

Answer is:

angle between normal reaction and the resultant of normal reaction and the limiting friction

48) The coefficient of friction depends on

area of contact

shape of surfaces

strength of surfaces

nature of surface

Answer is:

nature of surface

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

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45) If a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be

zero

Engineering Mechanics MCQ with Answers

Related Engineering Mechanics MCQ with Answers

46) The resultant of the following three couples 20 kg force, 0.5 m arm, $ ve sense 30 kg force, 1 m arm, - ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be

20 kg, - ve sense

47) Angle of friction is the

angle between normal reaction and the resultant of normal reaction and the limiting friction

48) The coefficient of friction depends on

nature of surface

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

Engineering Mechanics MCQ with Answers