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(b) A de shunt machine ( 10 kW, 250 V, 1200 rpm) had armature resistance of 0.25 N. The machine is connected to 250 V dc supply, draws rated armature current ad rotates at 1200 rpm i. Determine the generated voltage, the electromagnetic power developed and the torque developed. ii. The mechanical load on the motor shaft is disconnected, and the motor draws 4 A armature current, determine the speed and rotational loss (Ignore armature reaction)

(b) A de shunt machine ( 10 kW, 250 V, 1200 rpm) had armature resistance of 0.25 N. The machine is connected to 250 V dc supply, draws rated armature current ad rotates at 1200 rpm i. Determine the generated voltage, the electromagnetic power developed and the torque developed. ii. The mechanical load on the motor shaft is disconnected, and the motor draws 4 A armature current, determine the speed and rotational loss (Ignore armature reaction)

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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(b) A de shunt machine ( 10 kW, 250 V, 1200 rpm) had armature resistance of 0.25 N. The machine is connected to 250 V dc supply, draws rated armature current ad rotates at 1200 rpm i. Determine the generated voltage, the electromagnetic power developed and the torque developed. ii. The mechanical load on the motor shaft is disconnected, and the motor draws 4 A armature current, determine the speed and rotational loss (Ignore armature reaction)
Transcribed Image Text:(b) A de shunt machine ( 10 kW, 250 V, 1200 rpm) had armature resistance of 0.25 N. The machine is connected to 250 V dc supply, draws rated armature current ad rotates at 1200 rpm i. Determine the generated voltage, the electromagnetic power developed and the torque developed. ii. The mechanical load on the motor shaft is disconnected, and the motor draws 4 A armature current, determine the speed and rotational loss (Ignore armature reaction)
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