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1.)Armature reaction decreases the magnetic flux in? a)induction motor b)DC motor c)synchronous motor 2.) A 250 V shunt DC motor draws an armature current of 50 A at full load. The armature resistance is 0.2 Ω and field resistance RF=50Ω . The external resistance required to limit the start-up current to 100 A is a)0.2 Ω b)1.5 Ω c)2.3 Ω d)0.8 Ω 3.) An induction motor develops the maximum torque when the rotor is running at synchronous speed. a.)True b.)False

1.)Armature reaction decreases the magnetic flux in? a)induction motor b)DC motor c)synchronous motor 2.) A 250 V shunt DC motor draws an armature current of 50 A at full load. The armature resistance is 0.2 Ω and field resistance RF=50Ω . The external resistance required to limit the start-up current to 100 A is a)0.2 Ω b)1.5 Ω c)2.3 Ω d)0.8 Ω 3.) An induction motor develops the maximum torque when the rotor is running at synchronous speed. a.)True b.)False

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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1.)Armature reaction decreases the magnetic flux in?

a)induction motor

b)DC motor

c)synchronous motor

2.) A 250 V shunt DC motor draws an armature current of 50 A at full load. The armature resistance is 0.2 Ω and field resistance RF=50Ω . The external resistance required to limit the start-up current to 100 A is

a)0.2 Ω

b)1.5 Ω

c)2.3 Ω

d)0.8 Ω

3.) An induction motor develops the maximum torque when the rotor is running at synchronous speed.

a.)True

b.)False

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