Electrical Motors : Principles, Designs & Applications (Sachan Book 27) by Dr. Vibhav Kumar Sachan

Electrical Motors : Principles, Designs & Applications (Sachan Book 27) by Dr. Vibhav Kumar Sachan

Author:Dr. Vibhav Kumar Sachan [Sachan, Dr. Vibhav Kumar]
Language: eng
Format: azw3, pdf
Publisher: Smt. Jay Devi Sachan Memorial Publication House
Published: 2019-09-27T16:00:00+00:00


Q.95: Write down the equation for frequency of emf induced in an Altenator.

A. F = (PN)/120 Hz,Where P- Number of poles, N-Speed in rpm

Q.96: How are alternators classified?

A. According to shape of field system 1. Salient pole type 2. Smooth cylindrical type

Q.97: Compare salient pole rotor with cylindrical pole rotor.

A.

Topic

Salient pole

Cylindrical pole

Poles

Projected type

Non projected

Air gap

Non uniform

Uniform

Diameter

Large

Small

Axial length

Small

Large

Mechanical strength

Low

High



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