The amount of torque on a current-carrying conductor in a magnetic field depends upon a. the amount of current in the conductor. b. the direction of the magnetic field between the two poles. c. the current direction in the conductor. d. the direction of rotation. e. the left-hand rule. To obtain motor action, current is supplied to a loop of wire in a magnetic field by a. slip rings. b. split rings. c. a commutator. d. brushes. e. brushes and a commutator. If another loop of wire is added to make a double-loop armature, a. the torque becomes steadier. b. the magnetic field decreases in value. c. loop current direction is affected. d. the torque becomes less smooth. e. commutator segments must be reduced in number. The principle of motor action is a. a conversion of mechanical energy to electrical energy. b. a conversion of chemical energy to electrical energy. c. a conversion of electrical energy to mechanical energy. d. an unpredictable phenomenon.

The amount of torque on a current-carrying conductor in a magnetic field depends upon a. the amount of current in the conductor. b. the direction of the magnetic field between the two poles. c. the current direction in the conductor. d. the direction of rotation. e. the left-hand rule. To obtain motor action, current is supplied to a loop of wire in a magnetic field by a. slip rings. b. split rings. c. a commutator. d. brushes. e. brushes and a commutator. If another loop of wire is added to make a double-loop armature, a. the torque becomes steadier. b. the magnetic field decreases in value. c. loop current direction is affected. d. the torque becomes less smooth. e. commutator segments must be reduced in number. The principle of motor action is a. a conversion of mechanical energy to electrical energy. b. a conversion of chemical energy to electrical energy. c. a conversion of electrical energy to mechanical energy. d. an unpredictable phenomenon.

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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