Machine Kinematics Multiple Choice Questions(MCQs) and Answers – Kinematics of Motion

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Questions
1 The unit of linear acceleration is
A kg-m
B m/s
C m/s2
D rad/s2

Answer: m/s2
2 The angular velocity (in rad/s) of a body rotating at N r.p.m. is
A π N/60
B 2 π N/60
C π N/120
D π N/180

Answer: 2 π N/60
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3 The linear velocity of a body rotating at ω rad/s along a circular path of radius r is given by
A ω.r
B ω/r
C ωs2.r
D ωs2/r

Answer: ω.r
4 When a particle moves along a straight path, then the particle has
A tangential acceleration only
B centripetal acceleration only
C both tangential and centripetal acceleration
D none of the mentioned

Answer: tangential acceleration only
5 When a particle moves with a uniform velocity along a circular path, then the particle has
A tangential acceleration only
B centripetal acceleration only
C both tangential and centripetal acceleration
D none of the mentioned

Answer: centripetal acceleration only
6 When the motion of a body is confined to only one plane, the motion is said to be
A plane motion
B rectilinear motion
C curvilinear Motion
D none of the mentioned

Answer: plane motion
7 _______________ is the simplest type of motion and is along a straight line path.
A plane motion
B rectilinear motion
C curvilinear Motion
D none of the mentioned

Answer: rectilinear motion
8 _________________ is the motion along a curved path.
A plane motion
B rectilinear motion
C curvilinear Motion
D none of the mentioned

Answer: curvilinear Motion
9 Displacement of a body is a ___________ quantity.
A scalar
B vector
C scalar and vector
D none of the mentioned

Answer: vector
10 A train covers 60 miles between 2 p.m. and 4 p.m. How fast was it going at 3 p.m.?
A 60 mph
B 30 mph
C 40 mph
D 50 mph

Answer: 30 mph

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