Ratio of full load torque to maximum torque - Induction Machines

Q.  If sf is the full load slip and sm is the slip for maximum torque, then the ratio of full load torque to the maximum torque is given by
- Published on 23 Oct 15

a. 2sfsm / ( sm2 + sf2 )
b. 2sf / ( sm2 + sf2 )
c. 2sm / ( sm2 + sf2 )
d. sfsm / ( sm2 + sf2 )

ANSWER: 2sfsm / ( sm2 + sf2 )

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