The generated voltage per phase of an alternator is EO while the speed of rotor rotation is 3000 rpm. On changing the rotor speed to 750 rpm, the generated emf phase will become a. 0.25*E0 O b. 0.5*EO O c. 0.75*EO O d. EO

The generated voltage per phase of an alternator is EO while the speed of rotor rotation is 3000 rpm. On changing the rotor speed to 750 rpm, the generated emf phase will become a. 0.25E0 O b. 0.5EO O c. 0.75*EO O d. EO

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter7: Alternating Current, Power Distribution, And Voltage Systems

Section: Chapter Questions

Problem 7RQ

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Concept explainers

Single Phase Induction Motor

The single-phase induction motor or engine consists of a single rotating phase in the stator and a rotating cage in the rotor. When phase one supply is connected to the stator winding, a magnetic field is generated. In the pulsating field, the rotor does not rotate due to inertia. So, a single-phase import motor does not start and requires some initial methods.

Question

estion
The generated voltage per phase of an alternator is E0 while the speed of rotor rotation is 3000 rpm. On
changing the rotor speed to 750 rpm, the generated emf phase will become
O a. 0.25*EO
O b. 0.5*EO
O c. 0.75*EO
O d. EO

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