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Q:

Which of the following governor is used to drive a gramophone ?

A) Watt governor B) Porter governor
C) Pickering governor D) Hartnell governor
 
Answer & Explanation Answer: C) Pickering governor

Explanation: A Pickering governor is mostly used for driving gramophone. It consists of three straight leaf springs arranged at equal angular intervals round the spindle. Each spring carries a weight at the centre. The weights move outwards and the springs bend as they rotate about the spindle axis with increasing speed.

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