When the motive force induced on the oscillator becomes equal to the actual frequency of the oscillator, then the increase in the amplitude of the oscillator is called -

Question

Question

This question was previously asked in

RPF SI (2018) Official Paper (Held On : 16 Jan 2019 Shift 2)

Answer 1

The correct answer is Resonance

Key Points

Resonance occurs when the frequency of the externally applied periodic force equals the natural frequency of the oscillator.
This condition leads to a significant increase in the amplitude of oscillation due to the constructive interference of energy inputs.
Resonance is a fundamental concept in various fields such as mechanical systems, electrical circuits, and even in acoustics.
In practical applications, resonance can be both beneficial and detrimental, depending on the context and how it is managed.

Additional Information

Examples of resonance include the shattering of a glass by a singer's voice and the collapse of the Tacoma Narrows Bridge in 1940 due to wind-induced vibrations.
Engineers often design structures and systems to avoid resonance at operational frequencies to prevent potential damage or failure.
Resonance is also exploited in technologies such as MRI machines, where it is used to produce detailed images of the inside of the human body.
In electrical engineering, resonance in circuits can be used to select specific frequencies for filtering and tuning applications.