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.Management Sciences
Category: Theory of Machines
In gramophones for adjusting the speed of the turntable, the following type of governor is commonly employed_______________?
A. Hartung governor
B. Wilson Hartnell governor
C. Pickering governor
D. Inertia governor
E. none of the above
Higher pairs are those which have_________________?
A. point or line contact between the two elements when in motion
B. surface contact between the two ele-ments when in motion
C. elements of pairs not held together mechanically
D. two elements that permit relative motion
E. none of the above
T Jie horse power transmitted by a belt is dependent upon _________________?
A. tension on tight side of belt
B. tension on slack side of belt
C. radius of pulley
D. speed of pulley
E. all of the above
A completely constrained motion can be transmitted with __________________?
A. 1 link with pin joints
B. 2 links with pin joints
C. 3 links with pin joints
D. 4 links with pin joints
E. all of the above
A foot step bearing and rotor of a vertical turbine form examples of___________________?
A. incompletely constrained motion
B. partially constrained motion
C. completely constrained motion
D. successfully constrained motion
E. none of the above
Governor is used in automobile to_______________?
A. decrease the variation of speed
B. to control
C. to control SN
D. all of the above
E. none of the above
The magnitude of tangential acceleration is equal to____________________?
A. velocity2 x crank radius
B. velocityvcrankradius
C. (velocity/crankradius)
D. velocity x crank radius2
E. none of the above
Which of the following is a lower pair_______________?
A. ball and socket i
B. piston and cylinder
C. cam and follower
D. A. and B. above
E. belt drive
The Ackermann steering mechanism is preferred to the Davis type in automobiles because____________________?
A. the former is mathematically accurate
B. the former is having turning pair
C. the former is most economical
D. the former is most rigid
E. none of thfr above
If two moving elements have surface contact in motion, such pair is known as_________________?
A. sliding pair
B. rolling pair
C. surface pair
D. lower pair
E. higher pair
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