A 3-phase 440 V, 50 Hz induction motor has 4% slip. The frequency of rotor e.m.f. will be
A. 200 Hz
B. 2 Hz
C. 50 Hz
D. 0.2 Hz
Answer:B
A 3-phase 440 V, 50 Hz induction motor has 4% slip. The frequency of rotor e.m.f. will be
A. 200 Hz B. 2 Hz C. 50 Hz D. 0.2 Hz
Explanation: Frequency of the rotor current is given as