A 220-V d.c. machine has an armature resistance of 0.5 Q. If the full-load armature current is 20 A, find the induced e.m.f. when the machine acts as (i) generator (ii) motor. ellee 0.5 20 A Generator (a) 220 V Fig. 29.7 ellee 0.5 20 A Motor (b) 220 V
A 220-V d.c. machine has an armature resistance of 0.5 Q. If the full-load armature current is 20 A, find the induced e.m.f. when the machine acts as (i) generator (ii) motor. ellee 0.5 20 A Generator (a) 220 V Fig. 29.7 ellee 0.5 20 A Motor (b) 220 V
Chapter13: Electromagnetic Induction
Section: Chapter Questions
Problem 62P: A small series-wound dc motor is operated from a 12-V car battery. Under a normal load, the motor...
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