E MO 36.l Asiacellد ثاني صباحي امت. . .امتحان شهريالمادة المكائن الكهربائيةالمرحلة الثانية صباحيالز من ساعة واحدةQI\ A short compound d.c. generator supplies a current of 75 A at a voltage of225 V. Calculate the generated voltage if the resistance of armature, shunt fieldand series field windings are 0.04 ohm 90 ohm and 0.02 ohm respectively.Q2/ A d.c. series motor is running whith a speed of 800 r.p.m. while taking acurrent of 20 A from the supply. If the load is changed such that the currentdeawn by the motor is increased to 50 A, calculate the speed of the motor onnew load . The armature and series field winding resistances are 0.2 ohm and0.3 ohm respectively . Assume the flux produced is proportional to the currentAssume supply voltage as 250 V.

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QI A short compound d.c. generator supplies a current of 75 A at a voltage of 225 V. Calculate the generated voltage if the resistance of armature, shunt field and series field windings are 0.04 ohm 90 ohm and 0.02 ohm respectively.

QI A short compound d.c. generator supplies a current of 75 A at a voltage of 225 V. Calculate the generated voltage if the resistance of armature, shunt field and series field windings are 0.04 ohm 90 ohm and 0.02 ohm respectively.

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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Concept explainers

DC Generator

An electromechanical machine which converts input mechanical energy to respective output electric energy is called a generator.

Question

E MO 36.l Asiacell
د ثاني صباحي امت. . .
امتحان شهري
المادة المكائن الكهربائية
المرحلة الثانية صباحي
الز من ساعة واحدة
QI\ A short compound d.c. generator supplies a current of 75 A at a voltage of
225 V. Calculate the generated voltage if the resistance of armature, shunt field
and series field windings are 0.04 ohm 90 ohm and 0.02 ohm respectively.
Q2/ A d.c. series motor is running whith a speed of 800 r.p.m. while taking a
current of 20 A from the supply. If the load is changed such that the current
deawn by the motor is increased to 50 A, calculate the speed of the motor on
new load . The armature and series field winding resistances are 0.2 ohm and
0.3 ohm respectively . Assume the flux produced is proportional to the current
Assume supply voltage as 250 V.

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