DC Generator MCQs Quiz Multiple Choice Questions & Answers

DC Generator MCQs questions answers


Test Your Skills in DC Generator Quiz Online

Dive into the world of DC Generators with our comprehensive collection of multiple-choice questions and answers. Whether you're a student studying electrical engineering, an engineer designing power generation systems, or simply fascinated by the principles of electromagnetic induction, our meticulously curated selection covers a wide range of topics. Explore fundamental concepts such as generator types, armature reaction, commutation, and practical applications in various industries. With our user-friendly interface and detailed explanations, mastering the intricacies of DC generators has never been more engaging and accessible. Start your journey towards understanding the fundamentals of electrical power generation today!

DC Generator Questions with Answers

1. In a four-pole D.C. machine

2. In over compounded generator, full load terminal voltage is

3. Armature coil is short circuited by brushes when it lies

4. Lap winding is composed of

5. Wave winding is composed of

6. The terminal voltage of a D.C. shunt generator drops on load because of all of thefollowing reasons except

7. The bearings used to support the rotor shafts are generally

8. In a D.C. generator the critical resistance refers to the resistance of

9. Brushes of D.C. machines are made of

10. Laminations of core are generally made of

11. In D.C. generators, current to the external circuit from armature is given through

12. Which of the following could be lamina-proximately the thickness of laminations of a D.C. machine ?

13. Which of the following statement about D.C. generators is false ?

14. In a commutator

15. The commutator segments are connected to the armature conductors by means of

16. Armature reaction of an unsaturated D.C. machine is

17. A cumulatively compounded long shunt generator when operating as a motor would be

18. In case of D.C. machines, mechanical losses are primary function of

19. With a D.C. generator which of the following regulation is preferred ?

20. Armature reaction in a generator results in

21. If brushes of a D.C. generator are moved in order to bring these brushes in magneticneutral axis, there will be

22. While applying Flemings right-hand rule to And the direction of induced e.m.f., the thumb points towards

23. In lap winding, the number of brushes is always

24. Which of the following components of a D.C, generator plays vital role for providingdirect current of a D.C. generator ?

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

26. The series field of a short-shunt D.C. generator is excited by

27. In a D.C. generator

28. The critical resistance of the D.C. generator is the resistance of

29. Permeance is the reciprocal of

30. A shunt generator running at 1000 r.p.m. has generated e.m.f. as 200 V. If the speedincreases to 1200 r.p.m., the generated e.m.f. will be nearly

31. The e.m.f. generated in a D.C. generator is directly proportional to

32. The insulating material used between the commutator segments is normally

33. The voltage drop for which of the following types of brush can be expected to be least ?

34. In D.C. generators, lap winding is used for

35. If a D.C. generator fails to build up the probable cause could not be

36. In a D.C. generator in case the resistance of the field winding is increased, then outputvoltage will

37. In a D.C. generator the critical resistance can be increased by

38. In a D.C. generator in order to reduce sparking at brushes, the self-induced e.m.f. in thecoil is neutralised by all of the following except

39. In a separately excited generator supplying rated load the armature reaction ,

40. A separately excited generator as compared to a self-excited generator

41. In D.C. generators the polarity of the interpoles

42. Welding generator will have

43. The number of armature parallel paths in a two-pole D.C. generator having duplex lapwinding is

44. A D.C. welding generator has

45. The resistance of armature winding depends on

46. A D.C. generator works on the principle of

47. In D.C. generators, the brushes on commutator remain in contact with conductorswhich

48. Flemings right-hand rule regarding direction of induced e.m.f., correlates

49. Compensating windings are used in D.C. generators

50. The field coils of D.C. generator are usually made of

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