Download PDF
Machine Kinematics Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
A wheel accelerates uniformly from rest to 2000 r.p.m. in 20 seconds. What is its angular acceleration?
[A]
10.475 rad/s2
[B]
12 rad/s2
[C]
14 rad/s2
[D]
15 rad/s2
(2)
A wheel accelerates uniformly from rest to 2000 r.p.m. in 20 seconds. How many revolutions does the wheel make in attaining the speed of 2000 r.p.m.?
[A]
400
[B]
300
[C]
333.4
[D]
200
(3)
The acceleration of a particle at any instant moving along a circular path in a direction tangential to that instant, is known
[A]
tangential component
[B]
normal component
[C]
parallel component
[D]
none of the mentioned
Answer: tangential component
(4)
The acceleration of a particle at any instant moving along a circular path in a direction normal to the tangent at that instant and directed towards the centre of the circular path, is known as
[A]
tangential component
[B]
normal component
[C]
parallel component
[D]
none of the mentioned
(5)
When a particle moves along a straight path, then the radius of curvature is
[A]
infinitely small
[B]
zero
[C]
infinitely great
[D]
none of the mentioned
(6)
When a particle moves with a uniform velocity, then dv/dt will be
[A]
infinitely small
[B]
zero
[C]
infinitely great
[D]
none of the mentioned
(7)
A horizontal bar 1.5 metres long and of small cross-section rotates about vertical axis through one end. It accelerates uniformly from 1200 r.p.m. to 1500 r.p.m. in an interval of 5 seconds. What is the linear velocity at the beginning of the interval ?
[A]
188.6 m/s
[B]
235.5 m/s
[C]
300 m/s
[D]
400 m/s
(8)
A horizontal bar 1.5 metres long and of small cross-section rotates about vertical axis through one end. It accelerates uniformly from 1200 r.p.m. to 1500 r.p.m. in an interval of 5 seconds. What is the linear velocity at end of the interval ?
[A]
188.6 m/s
[B]
235.5 m/s
[C]
300 m/s
[D]
400 m/s
Take Mock Tests