Q5- A)- Select the correct answer for the alternatives given 1- Wave windings are used in d.c machine designed for what type of application? a) High voltage low current d-c generator, b) Low voltage high current d-c generator (d) Low voltage low torque d-c motor c) Low voltage high torque d-c motor, 2- A 220V shunt motor develops a torque of 54 Nm at an armature current of 10 A. The torque developed when the armature current is 20 A is a) 81 Nm., b) 108 Nm. c) 216 Nm. d) 270 Nm. 3-A d.c. shunt motor is running with certain load. The effect of adding an external resistance in field circuit is to a) reduce the motor speed b) increase the motor speed, c) stop the motor d) reduce the armature current of the motor 4- An 8-pole lap wound dc shunt generator is supplying 295 A to load. The field current of generator is 5A. The current parallel path is a)-300A b)- 150A, c)- 37.5A d)-36.5A 5- The electrical power developed by the armature of ad.c. motor is equal to a) Power input minus losses b) Power output multiplied by efficiency c) Power output plus iron losses d) Armature current multiplied by back emf
Q5- A)- Select the correct answer for the alternatives given 1- Wave windings are used in d.c machine designed for what type of application? a) High voltage low current d-c generator, b) Low voltage high current d-c generator (d) Low voltage low torque d-c motor c) Low voltage high torque d-c motor, 2- A 220V shunt motor develops a torque of 54 Nm at an armature current of 10 A. The torque developed when the armature current is 20 A is a) 81 Nm., b) 108 Nm. c) 216 Nm. d) 270 Nm. 3-A d.c. shunt motor is running with certain load. The effect of adding an external resistance in field circuit is to a) reduce the motor speed b) increase the motor speed, c) stop the motor d) reduce the armature current of the motor 4- An 8-pole lap wound dc shunt generator is supplying 295 A to load. The field current of generator is 5A. The current parallel path is a)-300A b)- 150A, c)- 37.5A d)-36.5A 5- The electrical power developed by the armature of ad.c. motor is equal to a) Power input minus losses b) Power output multiplied by efficiency c) Power output plus iron losses d) Armature current multiplied by back emf
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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