31. |
What is/are the necessary conditions for voltage build up in a self-excited generator?
|
||||||||
Answer:
Option (d) |
32. |
No-load saturation characteristics are plotted between
|
||||||||
Answer:
Option (a) |
33. |
The effect of __________ on main field flux is known as armature reaction.
|
||||||||
Answer:
Option (c) |
34. |
Armature flux is__________ with respect to main field flux or main field poles?
|
||||||||
Answer:
Option (c) |
35. |
Cross magnetization effects which of the following?
|
||||||||
Answer:
Option (a) |
36. |
Demagnetization effects which of the following?
|
||||||||
Answer:
Option (d) |
37. |
Brushes are always placed on __________ , in order to achieve sparkles commutation?
|
||||||||
Answer:
Option (b) |
38. |
Flux density under trailing pole tips in case of generator will
|
||||||||
Answer:
Option (a) |
39. |
Flux density under leading pole tips in case of generator will
|
||||||||
Answer:
Option (b) |
40. |
Which of the following is/are effects of armature reaction?
|
||||||||
Answer:
Option (d) |