A 4 pole, 50Hz , 3 phase I M is running at 1425rpm on full load having – McqOptions

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1.	A 4 pole, 50Hz , 3 phase I M is running at 1425rpm on full load having rotor impedance per phase on standstill as 0.4+j2Ω. The ratio of full load torque to maximum torque is ___.
A.	0.817
B.	1.223
C.	0.384
D.	0.4705
Answer» E.

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