Engineering :: Theory of Machines

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11.

If three bodies have plane motions, their instantataneous centres

A.	Lie in different planes	B.	Lie in a plane perpendicular to the plane of motion
C.	Lie in the same plane as the plane of motion	D.	Lie on a straight line
E.	None of the above

12.

A cycle chain is a kinematic chain

A.	Yes	B.	No
C.	Yes, provided the links are limited in number	D.	Yes provided the distance is limited
E.	None of the above

13.

A kinematic chain requires minimum of

14.

In simple harmonic motion the acceleration is proportional to

A.	Displacement	B.	Linear velocity
C.	Angular velocity	D.	Rate of change of angular velocity
E.	None of the above

15.

The Biflar susperision method is used to determine

A.	Position of balancing weights	B.	Centripetal acceleration
C.	Natural frequency of vibration	D.	Moment of inertia
E.	None of the above

16.

In case of lower pairs

A.	There is surface contact between the two elements while in the motion	B.	There is line contact between the two elements while in the motion
C.	There is point contact between the two elements while is motion	D.	The contact is only at lower end of the two elements while in motion
E.	None of the above

17.

In case of higher pairs

A.	There is contact only at higher point of the two elements while in motion	B.	There is only line or point contact between the two elements while in motion
C.	There is only line or point contact between the two elements while in motion	D.	There is no contact between the two elements
E.	None of the above

18.

In case of an elliptical trammel

A.	One pair turns and three pairs slide	B.	Two pairs turn and two pairs slide
C.	Three pairs turn and one pair slides	D.	All four pairs turn
E.	All four pairs slide

19.

Two parallel shafts, the distance between whose axies is small and variable, may be connected by

20.

The Ackermann steering gear consists of a four bar mechanism with

A.	Only one pair turning and three paris sliding	B.	Only two pairs turning and low pairs sliding
C.	Only three pairs turning and one pair sliding	D.	All four pairs turning
E.	All four pairs sliding