DC GENERATOR 3

A technical illustration of a DC generator with labeled parts and workings, showing electromagnetic principles and electrical components in a classroom setting.

DC Generator Challenge

Test your knowledge on DC generators with our engaging quiz! Covering essential concepts, this quiz is perfect for students and professionals looking to sharpen their understanding of electrical engineering.

Key Features:

Multiple choice questions on DC generator principles
Clear explanations for each question
Perfect for self-assessment and learning

10 Questions2 MinutesCreated by TestingWire237

21. The e.m.f., generated by a shunt wound D.C.generator is E. Now while pole flux remains constant, if the speed of the generator is doubled, the e.m.f., generated will be _________.

E/2

Slightly less than E

22. Following D.C.generator will be in a position to build up without any residual magnetism In the poles _____________.

Series generator

Shunt generator

Compound generator

Seperately excited generator

23. D.C.generator generally preferred for charging automobile batteries is ______________.

Series generator

Shunt generator

Long shunt compound generator

Any of the above

24. A shunt generator running at 1000r.p.m., has generated e.m.f., as 200volt. If the speed increases to 1200r.p.m., the generated e.m.f., will be nearly ___________.

150V

175V

240V

290V

25. If a D.C.generator fails to build up the voltage, the probable cause could not be _________.

IMPERFECT BRUSH CONTACT

Field resistance less than the critical value resistance

No residual magnetism in the generator

Faulty shunt connections tending to reduce the residual magnetism

26. Flashing the field of D.C.generator means ___________.

Neutralising residual magnetism

Creating residual magnetism by a D.C.source

Making the magnetic losses

increasing the flux density by adding extra turns of windings on poles

27. In a D.C.machine stray loss is the sum of ____________.

Total copper loss and mechanical loss`

Armature copper loss and iron loss

. Shunt field copper loss and mechanical loss

Iron loss and mechanical loss

28. In a D.C.generator in case the resistance of the field winding is increased, then output voltage will _____________.

Increase

Decrease

Remain unaffected

Fluctuate heavily

29. Which of the following generator will have negligible terminal voltage while running on no-load?

Series generator

Shunt generator

Compound generator

Seperately excited generator

30. In any rotating machine that part which houses the conductors and in which e.m.f., induced is to be utilised is called ___________.

Rotor

Stator

Field

Armature

DC GENERATOR 3

DC Generator Challenge

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