# For full load operation of 60Hz, 380V, 4 pole 30kW induction motor, the speed is 1746rpm,...

###### Question:

For full load operation of 60Hz, 380V, 4 pole 30kW induction motor,
the speed is 1746rpm, input current 56.2A power factor 90%.
In no load operation, input current 17.3A, power factor 13.5%.
In full load operation, assume that the mechanical loss is 25% of the total loss and no other losses.

b) Find a rotor copper loss under full load
c) Iron loss
d) Find a fixed automatic hand under full load
e) Find the proportion of stator loss, iron loss, rotor copper loss and machine loss in total losses.

a) 90.1%
b) 953W
c) 714W
d) 801W
e) 24.3%

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