Q. For a conductor current equal to 4 mA, Current carried by a particular brush in a 2-pole machine will be _____

View solution

Q. What is the relation between conductor current and armature current in wave winding?

View solution

Q. What is the spacing between the brushes for a wave winding when a machine is 6-pole DC armature with 16 slots having 2-coil sides per slot and single-turn coils.

View solution

Q. Number of parallel paths in wave winding are ______

View solution

Q. For a progressive wave winding Yc = ______

View solution

Q. What will be the value of “Yf + Yb” for a wave winding?

View solution

Q. What is the value of Yf for a lap winding with a 4-pole, 12 commutator segments, with two coil sides/slot.?

(Assume single-turns coils -retrogressive winding).

View solution

Q. Value of commutator pitch in lap winding is_____

View solution

Q. Current flowing through the armature conductors Ic is related to total current Ia by_______

View solution

Q. What is the relation between number of parallel paths(A) and number of poles(P)?

View solution

Q. What is the symmetry requirement of lap winding?

View solution

Q. Equalizer rings are needed in lap winding.

View solution

Q. What is the value of Yf for a lap winding with a 4-pole, 12-slot armature with two coil sides/slot? (Assume single-turns coils – progressive winding)

View solution

Q. What is the value of Yb for a lap winding with a 4-pole, 12-slot armature with two coil sides/slot. Assume single-turns coils.

View solution

Q. What is the condition of retrogressive winding?

View solution

Q. Resultant pitch in the lap winding is__________

View solution

Q. When coil sides are pole pitch apart, the DC armature winding is called as ___________

View solution

Q. For a 2-pole DC machine with coil span equal to 6, what are the number of commutator segments?

View solution

Q. What is the nature of the coils when Yᴄs value is non-integral?

View solution

Q. Coil span for 4-pole, 12-slot armature winding is_______

View solution