The armature resistance of a compound direct current motor with a long shunt is given as 0.25 Ω, the series winding resistance is 0.35 Ω and the shunt winding resistance is 600 Ω. If the armature of the direct current motor rotates at 1200 rpm, and it draws 25 amps from the armature windings to create a torque of 140 Nm, find the efficiency of the motor.
The armature resistance of a compound direct current motor with a long shunt is given as 0.25 Ω, the series winding resistance is 0.35 Ω and the shunt winding resistance is 600 Ω. If the armature of the direct current motor rotates at 1200 rpm, and it draws 25 amps from the armature windings to create a torque of 140 Nm, find the efficiency of the motor.
Chapter1: General Information For Electrical Installations
Section: Chapter Questions
Problem 14R
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The armature resistance of a compound direct current motor with a long shunt is given as 0.25 Ω, the series winding resistance is 0.35 Ω and the shunt winding
resistance is 600 Ω. If
the armature of the direct current motor rotates at 1200 rpm, and it draws 25 amps from the armature windings to create a torque of 140 Nm, find the efficiency of the motor.
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