52) The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be

r/2

2r/3

r/A

3r/2

Answer is:

3r/2

Structural Engineering III MCQ with Answers

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53) In the equation of virtual work, following force is neglected

reaction of any smooth surface with which the body is in contact

reaction of a rough surface of a body which rolls on it without slipping

reaction at a point or an axis, fixed in space, around which a body is con-strained to turn

all of these

Answer is:

all of these

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

maximum

minimum

zero

infinity

Answer is:

zero

55) 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

10 kg, - ve sense

20 kg, + ve sense

10 kg, + ve sense

Answer is:

20 kg, - ve sense

56) 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

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52) The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be

3r/2

Structural Engineering III MCQ with Answers

Related Structural Engineering III MCQ with Answers

53) In the equation of virtual work, following force is neglected

all of these

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

zero

55) 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

56) Angle of friction is the

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

Structural Engineering III MCQ with Answers