A three-phase, 60 Hz induction motor run at 1720 RPM and the following losses are known: stator copper loss =50 watts, rotor copper loss = 65 watts, combined rotational loss = 85 watts. Determine the following
a) Number of poles (4-pole)
b) slip (4.44%)
c) Air-gap Power (1,464 watts)
d) Output power (1,314 watts)
e) Input power (1,514 watts)
f) Efficiency (86.8%)
g) Output Torque (7.3 N-m)
h) Apparent power if the power factor is 0.85 Lag (1,781 VA)