A 6-pole 240 v 60 hz wye - connected induction motor has

Question

A 6-pole, 240 V, 60 Hz, WYE - connected induction motor has the following equivalent circuit parameters at 60 Hz in ohms per phase:

R₁ = 0.32

R₂ = 0.28

X₁-X₂ = 0.42

X_m = 18

ASSUME ROTATIONAL LOSSES ARE ZERO!

The motor operates at 1116 revolutions per minute at rated load conditions, when fed by a 240 V, 60 Hz source. Determine:

A. The slip

B. The magnitude of the input current in amps

C. The output torque (in N/m)

D. The magnitude of the current through X_m in amps

E. The horsepower in hp

F. The efficiency at the rated condition (1 hp = 740 watts)