A body is said to be under forced vibrations, when – McqOptions

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1.	A body is said to be under forced vibrations, when
A.	there is a reduction in amplitude after every cycle of vibration
B.	no external force acts on a body, after giving it an initial displacement
C.	a body vibrates under the influence of external force
D.	none of the above
Answer» D. none of the above

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