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

Theory of Machines MCQ with Answers

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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

12) When the connection between the two elements is such that only required kind of relative motion occurs, it is known as self-closed pair.

Right

Wrong

Answer is:

Right

13) The Whitworth quick return motion mechanism is formed in a slider crank chain when the

coupler link is fixed

longest link is a fixed link

slider is a fixed link

smallest link is a fixed link

Answer is:

coupler link is fixed

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

all of these

Theory of Machines MCQ with Answers

Related Theory of Machines MCQ with Answers

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

12) When the connection between the two elements is such that only required kind of relative motion occurs, it is known as self-closed pair.

Right

13) The Whitworth quick return motion mechanism is formed in a slider crank chain when the

coupler link is fixed

Theory of Machines MCQ with Answers