16. Three phase, 50 Hz, 30 MVA, 20 kV, delta connected alternator. Neglecting saturation, The required excitation current to produce 16 kV open circuit voltage is equal to 24 A. The required field current to produce rated open circuit voltage is equal to: O a. 30 A O b. 40 A O c. 45 A d. 50 A

16. Three phase, 50 Hz, 30 MVA, 20 kV, delta connected alternator. Neglecting saturation, The required excitation current to produce 16 kV open circuit voltage is equal to 24 A. The required field current to produce rated open circuit voltage is equal to: O a. 30 A O b. 40 A O c. 45 A d. 50 A

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter31: Three-phase Alternators

Section: Chapter Questions

Problem 1RQ: What conditions must be met before two alternators can be paralleled together?

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Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.

Question

16. Three phase, 50 Hz, 30 MVA, 20 kV, delta connected alternator.
Neglecting saturation, The required excitation current to produce 16
kV open circuit voltage is equal to 24 A. The required field current to
produce rated open circuit voltage is equal to:
O a. 30 A
O b. 40 A
O c. 45 A
O d. 50 A

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