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Oscillations and Waves - Department of Physics

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Oscillations and Waves - Department of Physics

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Questions and Answers

What does the quality factor (Q) measure in an oscillator?

Energy loss per cycle

Energy stored in the damped harmonic oscillator (correct)

Amplitude of the oscillatory motion

Damping of the oscillator

When does resonance occur in forced vibrations?

When the amplitude is small

When the driving force's period matches the natural frequency (correct)

When the damping is large

When the frequency is different from the natural frequency

What does the relaxation time measure in an oscillatory motion?

Time for damping to occur in the oscillator

Time for energy to reach maximum value

Time for frequency to reach maximum value

Time for amplitude to decay to 1/e of its initial value (correct)

What happens to resonance sharpness as damping increases?

It becomes less sharp Signup and view all the answers

How is the quality factor (Q) calculated in a damped harmonic oscillator?

$Q = \frac{w}{2r}$ Signup and view all the answers

What is the meaning of the term 'relaxation time' in the context of oscillatory motion?

Time taken for energy to decay to 1/e of its initial value Signup and view all the answers

In forced oscillations, what can cause a resonant peak to be less sharp?

Small damping Signup and view all the answers

'Quality factor' is also known by which other name?

'Figure of merit' Signup and view all the answers

'Resonance' in forced vibrations occurs when which condition is met?

'Driving force's period matches natural frequency' Signup and view all the answers

'Relaxation time' in an oscillatory motion measures the time required for what to happen?

'Energy to decay to 1/e of its initial value' Signup and view all the answers