A 4-pole induction motor (main) and a 6-pole motor (auxiliary) are con – McqOptions

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1.	A 4-pole induction motor (main) and a 6-pole motor (auxiliary) are connected in cumulative cascade. Frequency in the secondary winding of the auxiliary motor is observed to be 1 Hz. For a supply frequency of 50 Hz the speed of the cascade set is:
A.	1485 rpm
B.	990 rpm
C.	608 rpm
D.	588 rpm
Answer» E.

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