DieselShip's Online Content Library

Q19. Fig shows a power flow diagram for a three-phase, 2 pole, 6.6 kV, 60 HZ, Induction motor. At full-load the motor efficiency and power factor are 94% and 0.88 lag respectively, the output power is 200 kW and slip is 1.2%.

a) Calculate EACH of the following:

(i) the power input P_in (2)

(ii) the full-load current I_pfi (2)

(iii) the stator, rotor and mechanical losses. (8)

(iv) the shaft torque. (2)

b) State the two components of stator loss.