WINDING -5

41. The following are the demerits of concentric winding, except __________.

due to overlapping of coils, this type of winding has less space for cooling

skilled labour is required to insert the coils in the slots

a stepped former is required

. not as efficient as basket winding

42. Pole pitch in electrical degrees = ________

180

270

360

43. ____________ is the closed coil winding.

AC stator winding

field winding

DC armature winding

none of the above

44. That part of a coil which does not lie in the slot is known as the ______ of a coil.

active side

inactive side

coil side

none of the above

45. ___________ is also equal to the coil pitch.

back pitch

front pitch

average pitch

commutator pitch

46. The front pitch is greater than the back pitch in _________ winding.

progressive winding

retrogressive winding

single layer winding

double layer winding

47. The commutator pitch of a simplex progressive lap winding is equal to _____ segments.

-1

-2

48. The width of brush is equal to __________ segments in a quadruplex lap or wave winding.

49. There is a parallel combination of two simplex wave windings is known as _________.

duplex wave winding

. triplex wave winding

quadruplex wave winding

none of the above

50. Among the following windings, such a winding is not used much.

single layer winding

double layer winding

two layer winding

multi coil winding

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