1. In Lap winding, the number of brushes is always: a. Double the number of poles b. Same as number of poles e. Half the number of poles d. Multiple of number of poles 2.The material for commutator Brushes is generally: a. Cast Iron 3. The essential condition for parallel operation of two D.C. generators is that they have: a. Same kW rating b. The same operation r.p.m. e. The same drooping voltage characteristics d. Same percentage regulation 4. Magnetic field in a D.C. generator is produced by a. Electromagnets b. Permanent magnets e. Both (a) and (b) d. None of the above 5. In case of D.C. machines, mechanical losses are primary function of a. Current b. Voltage e. Speed d. None of above b. Copper e. Carbon d. Mica

1. In Lap winding, the number of brushes is always: a. Double the number of poles b. Same as number of poles e. Half the number of poles d. Multiple of number of poles 2.The material for commutator Brushes is generally: a. Cast Iron 3. The essential condition for parallel operation of two D.C. generators is that they have: a. Same kW rating b. The same operation r.p.m. e. The same drooping voltage characteristics d. Same percentage regulation 4. Magnetic field in a D.C. generator is produced by a. Electromagnets b. Permanent magnets e. Both (a) and (b) d. None of the above 5. In case of D.C. machines, mechanical losses are primary function of a. Current b. Voltage e. Speed d. None of above b. Copper e. Carbon d. Mica

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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