Assume a four pole, lap wound, long shunt compound (cumulative) d.c. generator with an armature resistance of 0.020, field resistance of 0.042 and a shunt resistance of 10Q. The armature has 120 conductors in the slots and runs at 1000rpm. The generator supplies three loads connected as follows: i. A7.2kW motor and a 2.4kW geyser connected in parallel and a a 1.8kW lighting load in series with the parallel combination in (i) above the voltage across the geyser is measured to be 240V ii. Neglect friction, rotational losses and assume a brush drop of 1.8V then: a. calculate the armature induced voltage b. calculate the flux per pole c. calculate the efficiency of the machine

Assume a four pole, lap wound, long shunt compound (cumulative) d.c. generator with an armature resistance of 0.020, field resistance of 0.042 and a shunt resistance of 10Q. The armature has 120 conductors in the slots and runs at 1000rpm. The generator supplies three loads connected as follows: i. A7.2kW motor and a 2.4kW geyser connected in parallel and a a 1.8kW lighting load in series with the parallel combination in (i) above the voltage across the geyser is measured to be 240V ii. Neglect friction, rotational losses and assume a brush drop of 1.8V then: a. calculate the armature induced voltage b. calculate the flux per pole c. calculate the efficiency of the machine

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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