Theory of machines - Section 1

Directions to Solve

Theory of machines - Section 1

1.

The cam follower generally used in automobile engines is

A.	knife edge follower
B.	fiat faced follower
C.	spherical faced follower
D.	roller follower

Answer: Option C

Explanation:

No answer description available for this question.

2.

A mass of 1 kg is attached to the end of a spring with a stiffness of 0.7 N/mm. The critical damping coefficient of this system is

A.	1.4 N-s/m
B.	18.52 N-s/m
C.	52.92 N-s/m
D.	529.2 N-s/m

Answer: Option C

Explanation:

No answer description available for this question.

3.

The gear train usually employed in clocks is a

A.	simple gear train
B.	reverted gear train
C.	sun and planet gear
D.	differential gear

Answer: Option B

Explanation:

No answer description available for this question.

4.

In order to give the primary balance of the reciprocating parts of a multi-cylinder in-line engines,

A.	the algebraic sum of the primary forces must be equal to zero
B.	the algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero
C.	both (a) and (b)
D.	none of these

Answer: Option C

Explanation:

No answer description available for this question.

5.

The frictional torque transmitted in a multi-collared shaft is same as that of a single collared shaft.

A.	Right
B.	Wrong

Answer: Option A

Explanation:

No answer description available for this question.

6.

An automobile steering gear is an example of

A.	sliding pair
B.	rolling pair
C.	lower pair
D.	higher pair

Answer: Option C

Explanation:

No answer description available for this question.

7.

In a screw jack, the effort required to lower the load W is given by

A.	P = W tan(α - φ)
B.	P = W tan(α + φ)
C.	P = W tan(φ - α)
D.	P = W cos(α + φ)

Answer: Option C

Explanation:

No answer description available for this question.

8.

In order to balance the reciprocating masses,

A.	primary forces and couples must be balanced
B.	secondary forces and couples must be balanced
C.	both (a) and (b)
D.	none of these

Answer: Option C

Explanation:

No answer description available for this question.

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