Theory of Machines MCQ
12-Following is used to specify the size of a gear
(A) diametral pitch
(B) dedendum circle
(C) pitch circle diameter
(D) addendum circle
13-Law of Gearing is about
(A) Constant torque between meshed gears
(B) Constant force between meshed gears
(C) Constant moment between meshed gears
(D) Constant velocity between meshed gears
14-For an isochronous governor, sensitiveness is equal to:
(A) 0
(B) 0.5
(C) 1.0
(D) infinity
15-Which of the following is a lower pair?
(A) Ball and socket
(B) Piston and cylinder
(C) both (A) and (B)
(D) Cam and follower
16-__________ governor is dead weight governor.
(A) Watt
(B) Porter
(C) Hartnell
(D) None of these
17-For a vibrating system, if the damping factor is unity, then the system is ______ damped
(A) under
(B) over
(C) critically
(D) none of these
18-A kinematic chain is known as a mechanism when _______ of the links is fixed.
(A) one
(B) two
(C) three
(D) none
19-Which of the following gears should be recommended for a speed reduction of 50: 1?
(A) Spiral bevel
(B) Helical
(C) Worm and worm wheel
(D) Bevel
20-_______ type of gear profile is free from interference.
(A) Cycloidal
(B) Involute
(C) Both involute & cycloidal
(D) None of these
21-The central gear of an epicyclic gear train is called a _________.
(A) Internal gear
(B) Ring gear
(C) Planet gear
(D) Sun gear
22-A quaternary joint, in a kinematic chain, is equivalent to ________ binary joint.
(A) none
(B) one
(C) two
(D) three
ANSWERS:
12-(C), 13-(D), 14-(D), 15-(C), 16-(B), 17-(C), 18-(A), 19-(C), 20-(A), 21-(D), 22-(D)