11) A universal joint an example of
a) lower pair
b) higher pair
c) rolling pair
d) sliding pair
12)Automobile steering gear is an example of
(a) higher pair
(b) sliding pair
(c) turning pair
(d) rotary pair
(e) lower pair.
13)Ackermann steering gear consists of
(a) sliding pairs
(b) turning pairs
(c) rolling pairs
(d) higher pairs
(e) lower pairs.
14) Which of these mechanisms gives an approximately straight line ?
a) Hart
b) Watt
c) Paucellier
d) Kempe
15) The Davis steering gear fulfills the condition of correct gearing at
a) two positions
b) three positions
c) all positions
d) one positions
16) The cam size depends upon
a) pitch circle
b) base circle
c) prime circle
d) operating speed of the cam
17) The cam follower used in automobile engines is
a) roller
b) flat faced
c) spherical faced
d) knife edged
18) Which of the following motion of cam roller follower leads to the lowest jerk ?
a) Uniform
b) Simple harmonic
c) Cycloidal
d) Parabolic
19) The contact ratio of gears is always
a) more than one
b) one
c) less than one
d) zero
20) The size of Gear is specified by
a) Circular pitch
b) Diametral pitch
c) Module
d) All of the above