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.

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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.
Transcribed Image Text: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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