What is sharpness of resonance class 12?

The sharpness of resonance is defined using the ‘Q’ factor which explain how fast energy decay in an oscillating system.

How do you increase sharpness of resonance?

It is desired to improve the sharpness of the resonance of the circuit by reducing its ‘full width at half maximum’ by a factor of 2. Suggest a suitable way. For improvement in sharpness of resonance by a factor of 2, Q should be doubled. To double Q with changing ωr, R should be reduced to half, i.e., to 3.7 Ω.

What do you mean by sharpness of resonance in a series resonant circuit?

Sharpness of resonance in a series resonant circuit is defined by the Q factor . This can be defined as how quickly the energy of the oscillating system decays. Thus, we can say that when damping increase the sharpness also increase and when damping decrease sharpness of resonance also decrease.

What do you mean by sharpness of sound?

Sharpness is a measure of the high frequency content of a sound, the greater the proportion of high frequencies the ‘sharper’ the sound. Zwicker and Fastl [1] define a sound of sharpness 1 acum as ‘a narrow band noise one critical band wide at a centre frequency of 1kHz having a level of 60dB’.

What do you understand by sharpness of resonance for series LCR resonate circuit how it is related to Q factor of the circuit explain the factors which affect it?

The $Q$-factor determines the sharpness of the resonance curve. If the resonance is less sharp, not only the maximum current is less, the circuit is closer to resonance for larger values of $\Delta \omega $and frequencies and tuning of the circuit will not be good.

What is a real life example of resonance?

A playground swing is one of the familiar examples of resonance. When we push the swing, it starts moving forward and backwards. If a series of regular pushes are given to the swing, its motion can be built. The person who is pushing the string has to match the timing of the swing.

What is the condition of sharpness of resonance in a series LCR circuit?

18.8 K. Assertion (A) : In a series LCR a.c. circuit resonance can take place when inductive and capacitive reactances are equal. Reason (R) : Sharpness of resonance increases if resistance presence in LCR resonance circuit is reduced.

Which of the following quantities is regarded as a measure of sharpness of resonance?

The quantity (ω0/2Δω) is regarded as a measure of the sharpness of resonance. The smaller the Δω, the sharper or narrower is the resonance. Here, ω0 is the resonant frequency, 2Δω is the bandwidth.

How is sound sharpness calculated?

Sharpness is related how much a sound’s spectrum is in the high end. You can compute sharpness as a particular weighted sum of the specific loudness levels in various bands, typically 1/3-octave bands. This weight function that increases rapidly toward the highest frequency bands.