Answer to Question #260621 in Mechanical Engineering for Lebo

Question

1) A 400 V, 50 Hz 6 pole star connected three-phase induction motor consumes 75 kW with a line current of 75 A and runs at a slip of 2,5 %. If the stator iron loss is 2 kW, the windage and friction losses is 1,2 kW and the resistance between two stator terminals is 0,32 ohm, calculate:

a)    the power supplied to the rotor (Ps),

b)   the rotor copper loss (PcuR),

c)    the power supplied to the load (Pout )

d) the efficiency and

e) the shaft torque developed.

Answer 1

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