A 120V, 5kW, 1200rpm shunt DC motor has following parameters: R_0 = 0.25 Ohm, R_0 = 110 Ohm The rotational loss of the motor is 130W. a) What is the starting current of the motor? b) If the motor delivers 35 N.m and draws an armature current of 40A, what is the speed of the motor? c) What is the efficiency of the motor at rated power?

6.5 - A 120V, 5kW, 1200rpm shunt DC motor has following parameters: R_0 = 0.25 Ohm, R_0 = 110 Ohm The rotational loss of the motor is 130W. a) What is the starting current of the motor? b) If the motor delivers 35 N.m and draws an armature current of 40A, what is the speed of the motor? c) What is the efficiency of the motor at rated power?

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images - A 120V, 5kW, 1200rpm shunt DC motor has following parameters: R_0 = 0.25 Ohm, R_0 = 110 Ohm The rotational loss of the motor is 130W. a) What is the starting current of the motor? b) If the motor delivers 35 N.m and draws an armature current of 40A, what is the speed of the motor? c) What is the efficiency of the motor at rated power?

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