Tag: oscillations

Quizzes (16) Questions (206)

Questions Related to oscillations

Multiple choice free, damped and forced oscillations free, forced and damped oscillations oscillations oscillation and waves physics

Which of the following works on the principle of forced vibration?

  1. Guitar

  2. Tuning fork

  3. Drum

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Forced vibration is an action in which periodic repetitive and oscillatory force is applied on an object. In this condition, the object is forced to vibrate with the frequency of the applied force. Hence all are forced vibrations.

Multiple choice free, damped and forced oscillations free, forced and damped oscillations oscillations oscillation and waves physics

A motion caused by an unbalanced rotating component is an example of

  1. free vibration

  2. forced vibration

  3. natural vibration

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A motion of an unbalanced rotating component is an example of forced vibration. As to rotate it with the unbalanced condition some external agent is required.

Multiple choice free, damped and forced oscillations free, forced and damped oscillations oscillations oscillation and waves physics

The oscillation of a body or system with its own natural frequency and under no external influence other than the impulse that initiated the motion is known as:

  1. Damped oscillation

  2. Free oscillation

  3. Impulsive oscillation

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The oscillation of a body or system with its own natural frequency and under no external influence other than the impulse that initiated the motion is known as free oscillation.

Multiple choice free, damped and forced oscillations free, forced and damped oscillations oscillations oscillation and waves physics

A particle of mass 0.10 kg executes Simple harmonic motion with an amplitude 0.05 m and frequency 20 vib/s. Its energy of oscillation is

  1. 2 J

  2. 4 J

  3. 1 J

  4. zero
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

$E = \frac{1}{2}m{\omega^2}{A^2}$

$ = \frac{1}{2} \times 10 \times {\left( {2\pi  \times 20} \right)^2} \times {\left( {0.05} \right)^2}$
$ = 2J$
Hence,
option $(A)$ is correct answer.

Multiple choice free, damped and forced oscillations free, forced and damped oscillations oscillations oscillation and waves physics

The displacement of particle in S.H.M. is indicated by equation $y=10{\,}sin(20t+\pi/3)$where y is in meters. The value of time period of vibration will be (in seconds):

  1. $10/pi$
  2. $pi/10$
  3. $2\pi/10$
  4. $10/2\pi$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Comparing the given equation y = 10 sin(20t + pi/3) with the standard SHM equation y = A sin(omega*t + phi), we find the angular frequency omega = 20 rad/s. The time period T is given by 2*pi / omega, which equals 2*pi / 20 = pi/10 seconds.

Multiple choice free, damped and forced oscillations free, forced and damped oscillations oscillations oscillation and waves physics

A watch becomes fast by 5 minutes in a day. In the watch makers shop, it keeps correct time. It is due to :

  1. natural vibrations

  2. forced vibrations

  3. damped vibrations

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In watchmakers' shop watch is oscillated with forced vibrations, so it has keeps correct time there. By itself, watch performs oscillations at natural frequency which is faster.