Topic Quiz on Oscillations
Quiz
A cycle is:
- A movement from one extreme to the other extreme of an oscillation.
- A movement from one extreme of the oscillation to the rest position.
- A movement from one extreme to the other extreme of an oscillation and back again.
- Used only when the oscillating system is also describing circular motion.
The angular velocity is worked out by:
- 2 x pi x f
- 2 x pi / f
- 2 x pi x T
- 4 x pi ^2 x f^2
Resonance occurs when:
- The forcing frequency is less than the natural frequency.
- The forcing frequency is greater than the natural frequency.
- The forcing frequency is equal to the natural frequency.
- No forcing frequency is applied to the oscillating system
We can tell when a system is in resonance when:
- The amplitude of the oscillations is zero.
- The amplitude of the oscillations is at the normal value
- The amplitude of the oscillations is varies between zero and a large value.
- The amplitude of the oscillations is at a large value, much bigger than normal.
Which of the following statements is true when damping is applied to an oscillating system?
- The amplitude increases and the resonant frequency increases slightly.
- The amplitude rapidly decreases and the resonant frequency increases slightly.
- The amplitude rapidly increases and the resonant frequency decreases slightly.
- The amplitude rapidly decreases and the resonant frequency decreases slightly.
The damping provided by shock absorbers on a car has to be:
- Light
- Heavy
- Critical
- Super-critical
Resonance is useful in which of the following situations?
- A bell ringer swinging a heavy church bell.
- A soprano singer shattering a wine glass.
- A mirror on a lorry vibrating.
- Oscillations occuring in a suspension bridge.
Which one of the follwing is NOT a system in resonance.
- A child being pushed on a swing.
- A violin string being played with a bow.
- An organ pipe being sounded.
- The vibrations of a loudspeaker
An oscillation occurs at a natural frequency of 5 Hz. Which one of the following statements are true?
- The period is 5 seconds and the resonat frequency is 5 Hz
- The period is 0.2 s and the resonat frequency is 5 Hz
- The period is 5 s and the resonant frequency is 0.2 Hz
- The period is 5s and the resonant frequency is 7.5 Hz
What is the angular velocity of a 5 Hz oscillation?
- 1.26 rad/s
- 5 rad/s
- 6.28 rad/s
- 31.4 rad/s