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1. |
In a three phase induction motor, rotor current in each phase lags behind the generated emf in that phase to rotor by a power factor angle of _________ |
A. | atan(r2/x2) |
B. | atan(x2/r2) |
C. | atan(x1/r1) |
D. | atan(r1/x1) |
Answer» C. atan(x1/r1) | |