While performing retardation tests, machine run at slightly greater than its rated speed

Q.  While performing retardation tests, the machine whose test is to be taken is run at a speed which is
- Published on 19 Oct 15

a. Slightly less than its rated speed
b. Equal to its rated speed
c. Slightly greater than its rated speed
d. All of these

ANSWER: Slightly greater than its rated speed

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