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Objective Questions
Engineering
Mechanical
ME Set-1
Theory of Machines
7

Theory of Machines MCQ with Answers

7) In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

total lift, total angle of lift, minimum radius of cam and cam speed

radius of circular arc, cam speed, location of centre of circular arc and roller diameter

mass of cam follower linkage, spring stiffness and cam speed

total lift, centre of gravity of the cam and cam speed

Answer is:

total lift, total angle of lift, minimum radius of cam and cam speed

Theory of Machines MCQ with Answers

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8) When the relation between the controlling force (F_c) and radius of rotation (r) for a spring controlled governor is F_c = ar + b, then the governor will be

stable

unstable

isochronous

none of these

Answer is:

unstable

9) The factor which affects the critical speed of a shaft is

diameter of disc

span of shaft

eccentricity

all of these

Answer is:

all of these

Explanation:

The factor which affects the critical speed of a shaft is
* diameter of disc
* span of shaft
* eccentricity

10) The partial balancing of reciprocating parts in locomotives produces

hammer blow

swaying couple

variation in tractive force along the line of stroke

all of the above

Answer is:

all of the above

11) The pair is known as a higher pair, when the relative motion between the elements of a pair is

turning only

sliding only

rolling only

partly turning and partly sliding

Answer is:

partly turning and partly sliding

Theory of Machines MCQ with Answers

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7) In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

total lift, total angle of lift, minimum radius of cam and cam speed

Theory of Machines MCQ with Answers

Related Theory of Machines MCQ with Answers

8) When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be

unstable

9) The factor which affects the critical speed of a shaft is

all of these

10) The partial balancing of reciprocating parts in locomotives produces

all of the above

11) The pair is known as a higher pair, when the relative motion between the elements of a pair is

partly turning and partly sliding

Theory of Machines MCQ with Answers

8) When the relation between the controlling force (F_c) and radius of rotation (r) for a spring controlled governor is F_c = ar + b, then the governor will be