Objective Type Questions on Theory of Machines
1-The following mechanism is not an inversion of double slider crank mechanism.
(A) Scotch Yoke Mechanism
(B) Oldham’s Coupling
(C) Beam Engine Mechanism
(D) Elliptical Trammel
2-The following mechanism has got Coriolis component of acceleration.
(A) Pantograph
(B) Slider Crank Mechanism
(C) Whitworth Quick Return Mechanism
(D) Steering Gear Mechanism
3-Following governor is used in gramophone.
(A) Porter governor
(B) Watt governor
(C) Hartnell governor
(D) Pickering governor
4-The effort of a governor is the force exerted by the governor on the
(A) Lower links
(B) Upper links
(C) Balls
(D) Sleeve
5-For high speed cams the recommended type of follower motion is
(A) Simple Harmonic Motion
(B) Parabolic
(C) Uniform Velocity
(D) Cycloidal Motion
6-The following coupling is used to connect two parallel shafts having small distance between the axes
(A) Muff Coupling
(B) Hooke’s Joint
(C) Flange Coupling
(D) Oldham’s Coupling
7-Minimum number of teeth of standard proportion with involute profile and 20° pressure angle spur gear is
(A) 12
(B) 18
(C) 20
(D) 32
8-The Cam follower extensively used in air craft engine is
(A) Roller follower
(B) Flat faced follower
(C) Knife edge follower
(D) Spherical faced follower
9-The degrees of freedom of a simple pendulum is given by
(A) 0
(B) 1
(C) 2
(D) 6
10-Two parallel and co-planar shafts are connected by
(A) Double helical gears
(B) Bevel gears
(C) Spur gears
(D) Spiral gears
ANSWERS:
1-(C), 2-(C), 3-(D), 4-(C), 5-(D), 6-(D), 7-(B), 8-(A), 9-(B), 10-(C)