Study theory of machines topics including mechanisms, gears, kinematics, dynamics, balancing, and engineering examination preparation.
What is theory of machine? Theory of Machines may be defined as that branch of engineering science which deals with the study of relative motion between various elements of a machine and the forces which act on them. A machine is any physical system with ordered structural and functional properties. It may represent human-made or […]
01. Which of the following disciplines provides study of inertia forces arising from the combined effect of the mass and the motion of the parts A. theory of machines B. applied mechanics C. mechanisms D. kinetics Answer Option : D 02. Which of the following disciplines provides study of relative motion between the parts of
31. Oldham’s coupling is the A. second inversion of double slider crank chain B. third inversion of double slider crank chain C. second inversion of single slider crank chain D. third inversion of slider crank chain Answer Option : B 32. Sense of tangential acceleration of a link A. is same as that of velocity
11. The purpose of a link is to A. transmit motion B. guide other links C. act as a support D. all of the above Answer Option : D 12. A universal joint is an example of A. higher pair B. lower pair C. rolling pair D. sliding pair Answer Option : B 13. Rectilinear
21. Kinematic pairs are those which have two elements that A. have line contact B. have surface contact C. permit relative motion D. are held together Answer Option : C 22. The lower pair is a A. open pair B. closed pair C. sliding pair D. point contact pair Answer Option : B 23. Automobile
41. In problem 47, the chain is unconstrained when A. L.H.S. = R.H.S. B. L.H.S. > R.H.S. C. L.H.S. < R.H.S D. there is no such criterion for checking above requirement Answer Option : C 42. The tendency of a body to resist change from rest or motion is known as A. mass B. friction
51. In automobiles the power is transmitted from gear box to differential through A. bevel gear B. universal joint C. Hooke’s joint D. Knuckle joint Answer Option : D 52. The indicator using Watt mechanism is known as A. Thompson indicator B. Richard indicator C. Simplex indicator D. Thomson indicator Answer Option : B 53.
61. The locus of a point on a thread unwound from a cylinder will be A. a straight line B. a circle C. involute D. cycloidal Answer Option : C 62. To transmit power from one rotating shaft to another whose axes are neither parallel nor intersecting, use A. spur gear B. spiral gear C.
71. An eccentric sheave pivoted at one point rotates and transmits oscillatory motion to a link whose one end is pivoted and other end is connected to it. This mechanism has A. 2 links B. 3 links C. 4 links D. 5 links Answer Option : C 72. Whitworth quick return mechanism is obtained by
81. In above example, the minimum length of the coupler will be A. 45 mm B. slightly less than 45 mm C. slightly more than 45 mm D. 95 mm Answer Option : C 82. In S.H.M., acceleration is proportional to A. velocity B. displacement C. rate of change of velocity D. all of the
91. According to Kennedy’s theorem, if three bodies have plane motions, their instantaneous centers lie on A. a triangle B. a point C. two lines D. a straight line Answer Option : D 92. In a rigid link OA, velocity of A w.r.t. will be A. parallel to OA B. perpendicular to OA C. at
