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Free download in 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 body is said to vibrate with simple harmonic motion if its acceleration is proportional to the distance from the mean position.
(2)
The maximum displacement of a body, from its mean position is called amplitude.
(3)
Frequency of vibrations is usually expressed in
[A]
number of cycles per hour
[B]
number of cycles per minute
[C]
number of cycles per second
[D]
none of the mentioned
Answer: number of cycles per second
(4)
The amplitude of vibrations is always ______________ the radius of the circle.
[A]
equal to
[B]
less than
[C]
greater than
[D]
none of the mentioned
(5)
The time taken by a particle for one complete oscillation is known as periodic time.
(6)
The periodic time is given by
[A]
ω/2п
[B]
2п/ω
[C]
ω x 2п
[D]
п/ω
(7)
When a body moves with simple harmonic motion, the product of its periodic time and frequency is equal to
[A]
zero
[B]
one
[C]
п/2
[D]
п
(8)
The acceleration of the particle moving with simple harmonic motion is ____________ at the mean position.
[A]
zero
[B]
minimum
[C]
maximum
[D]
none of the mentioned
(9)
The maximum velocity of a particle moving with simple harmonic motion is
[A]
ω
[B]
ωr
[C]
ω2r
[D]
ω/r
(10)
When a particle moves round the circumference of a circle of radius r with ω rad/s, then its maximum acceleration is ω2r.
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