Question

A 200V DC shunt motor has motor armature, Ra = 0.1 ? and field resistance, Rf = 240 ?. The rotational losses are given at 236 W. At full load, the line current is 9.8 A with the motor running at 1450 rpm. Determine: i. The mechanical power developed ii. The output power iii. The load torque iv. Full load efficiency

          A 200V DC shunt motor has motor armature, Ra = 0.1 ? and field resistance, Rf = 240 ?. The rotational losses are given at 236 W. At full load, the line current is 9.8 A with the motor running at 1450 rpm. Determine:
i. The mechanical power developed
ii. The output power
iii. The load torque
iv. Full load efficiency

A 200V DC shunt motor has motor armature, Ra = 0.1 ? and field resistance, Rf = 240 ?. The rotational losses are given at 236 W. At full load, the line current is 9.8 A with the motor running at 1450 rpm. Determine:
i. The mechanical power developed
ii. The output power
iii. The load torque
iv. Full load efficiency

Added by Marissa S.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Adi S

07/04/2023

Step 1

The field current, If, is given by: If = V / Rf = 200V / 240Ω = 0.833 A Show more…

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A 200V DC shunt motor has motor armature, Ra = 0.1 ̦ and field resistance, Rf = 240 ̦. The rotational losses are given at 236 W. At full load, the line current is 9.8 A with the motor running at 1450 rpm. Determine: i. The mechanical power developed ii. The output power iii. The load torque iv. Full load efficiency