In vibration analysis 'Beat' frequency is
A)The frequency at which vibrations of a system are damped
B)Said to occur when two vibrations of almost equal frequency are present
C)The frequency when a system exceeds the vibrations frequency from the critical value
D)The frequency below which vibrations do not cause appreciable damage to equipment
E)One at which the vibrations of a system act exactly opposite to the other thereby causing damping

Question

Quizplus · Accepted Answer

Beat frequency occurs when two vibrations of nearly equal frequencies are superimposed, resulting in a new vibration pattern that fluctuates in amplitude. This phenomenon is observed as a variation in intensity or loudness at the beat frequency, which is the difference between the frequencies of the two combining waves.

In Vibration Analysis 'Beat' Frequency Is