0-3- An Elevator has 30 induction motor- a star-connected rotor has an induced e.m.f. of 80 volts between slip-rings at standstill on open-circuit. The rotor has a resistance and reactance per phase of 1 f and 4 2 respectively. Calculate current/phase and power factor when (a) slip- rings are short-circuited (b) slip-rings are connected to a star-connected rheostat of 3 2 per nhase
0-3- An Elevator has 30 induction motor- a star-connected rotor has an induced e.m.f. of 80 volts between slip-rings at standstill on open-circuit. The rotor has a resistance and reactance per phase of 1 f and 4 2 respectively. Calculate current/phase and power factor when (a) slip- rings are short-circuited (b) slip-rings are connected to a star-connected rheostat of 3 2 per nhase
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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