Theory of Machines Quiz | Theory of Machines Multiple Choice Questions(MCQs) & Answers

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Questions
1 The size of Gear is specified by
A Module
B Diametral pitch
C Circular pitch
D All of the above

Answer: All of the above
2 The contact ratio of gears is always
A more than one
B less than one
C one
D zero

Answer: more than one
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3 Which of the following motion of cam roller follower leads to the lowest jerk ?
A Uniform
B Simple harmonic
C Cycloidal
D Parabolic

Answer: Simple harmonic
4 The cam follower used in automobile engines is
A spherical faced
B knife edged
C roller
D flat faced

Answer: spherical faced
5 The cam size depends upon
A base circle
B prime circle
C pitch circle
D operating speed of the cam

Answer: base circle
6 The Davis steering gear fulfills the condition of correct gearing at
A two positions
B three positions
C all positions
D one positions

Answer: all positions
7 Which of these mechanisms gives an approximately straight line ?
A Hart
B Watt
C Paucellier
D Kempe

Answer: Watt
8 Ackermann steering gear consists of
A sliding pairs
B turning pairs
C rolling pairs
D higher pairs

Answer: turning pairs
9 Automobile steering gear is an example of
A lower pair
B rotary pair
C sliding pair
D higher pair

Answer: lower pair
10 A universal joint an example of
A sliding pair
B lower pair
C higher pair
D rolling pair

Answer: lower pair
11 Pitch point on a cam is
A any point on pitch curve
B the point on cam pitch curve having the maximum pressure angle
C any point on pitch circle
D the point on cam pitch curve having the minimum pressure angle

Answer: the point on cam pitch curve having the maximum pressure angle
12 The space centrode of a circular disc rolling on a straight path is
A a circle
B a straight line
C ellipse
D a parabola

Answer: a straight line
13 The example of lower pair is
A automobile steering gear
B straight line motion mechanisms
C shaft revolving in a bearing
D all of the above

Answer: all of the above
14 Quick return mechanism is used in
A Slotter
B Milling machine
C Universal lathe machine
D Hook’s coupling

Answer: Slotter
15 The instantaneous centers which vary with the configuration of mechanism are called
A Neither fixed nor permanent instantaneous centers
B Fixed instantaneous centers
C Permanent instantaneous centers
D None of the above

Answer: Neither fixed nor permanent instantaneous centers
16 Degree of freedom of super structure is
A less than zero
B greater than one
C zero
D less than one

Answer: less than zero
17 The example of successfully constrained motion is a
A Piston reciprocating inside an engine cylinder
B Motion of the shaft between a footstep bearing
C Motion of an I.C. engine valve
D All of the above

Answer: All of the above
18 The lead screw of a lather with nut is a
A screw pair
B sliding pair
C rolling pair
D turning pair

Answer: screw pair
19 The unbalanced primary forces in a reciprocating engine are
A Balanced partially
B Balanced completely
C Balanced by secondary forces
D Not balanced

Answer: Balanced partially
20 The contact ratio gears is always
A more than one
B zero
C one
D less than one

Answer: more than one

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