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Mechanical Engineering Objective Questions { Theory of Machines }

1. The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as
A.Turning pair
B.Rolling pair
C.Sliding pair
D.Spherical pair

2. Which of the following is a lower pair
A.Ball and socket
B.Piston and cylinder
C.Cam and follower (a) and (b) above
D.Belt drive.

3. If two moving elements have surface contact in motion, such pair is known asi
A.Sliding pair
B.Higher pair.
C.Surface pair
D.Lower pair

4. The example of lower pair is
A.Shaft revolving in a bearing
B.Straight line motion mechanisms
C.Automobile steering gear
D.All of the above

5. Pulley in a belt drive acts as
A.Cylindrical pair
B.Turning pair
C.Rolling pair
D.Sliding pair

6. The example of rolling pair is
A.Bolt and nut
B.Lead screw of a lathe
C.Ball and socket joint
D.Ball bearing and roller bearing

7. Any point on a link connecting double slider crank chain will trace a
A.Straight line

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