The turntable of a gramophone is rotated at a constant speed of x revo – McqOptions

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1.	The turntable of a gramophone is rotated at a constant speed of x revolutions/minute. Which one of the following values of the revolutions per minute is not used? [NDA]
A.	78 r.p.m.
B.	56 r.p.m.
C.	45 r.p.m.
D.	33 r.p.m.
Answer» C. 45 r.p.m.

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