The winding of a 4-pole alternator having 36 slots and a coil span of 1 to 8 isshort-pitched by ........... degrees.15040.9020Brushless excitation system consisting of:Stator field winding and power diodesstator and rotor field winding and capacitorstator and rotor field winding and power diodesEverything mentioned in the optionsFull Name : *

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The winding of a 4-pole alternator having 36 slots and a coil span of 1 to 8 is short-pitched by............ degrees. 150 40. 90 20

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.4P

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Concept explainers

Synchronous Motor

The synchronous motor is an AC electric type motor where at a steady-state the shaft rotation is synchronized with the supply current variable-frequency. To an integral number of AC cycles, the rotation period is exactly equal. The stator of the motor in the synchronous motor contains multi-phase AC electromagnets due to which a magnetic field is created that rotates in time with the oscillation of the line current. The rotor contains a permanent magnet and the rotor rotates in synchronization with the stator field at the same rate and provides the second synchronized magnetic field which is rotating in nature as a result. When the synchronous motor is supplied with independently excited multi-phase AC electromagnets on both the rotor and the stator, it is termed as a doubly-fed machine. The most widely used AC-type motors are the synchronous AC motor and the induction AC motors.

Question

The winding of a 4-pole alternator having 36 slots and a coil span of 1 to 8 is
short-pitched by ........... degrees.
150
40.
90
20
Brushless excitation system consisting of:
Stator field winding and power diodes
stator and rotor field winding and capacitor
stator and rotor field winding and power diodes
Everything mentioned in the options
Full Name : *

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