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Q5-(A)-Select the correct answer for the alternatives given. 1- he secondary winding of which of the following transformer is always kept close a)- power transformer b)- auto-transformer c)- current transformer d)- distribution transformer 2-In transformer ,the load current at maximum efficiency is equal to rated load current multiplied by PL d)- Pcu a)- Peu PL b)- [ Pcu Pcu Pi 3-which of the following does not change in transformer a)-current b)-voltage c)- frequency d)-all of the above 4-The full-load copper loss and iron loss of transformer are 6400w and 500w respectively. The copper loss and iron loss at half load will be respectively. a)-(3200 w and 2500 w) b)- (1600 w and 1250 w) c)- (1600 w and 5000w ) d)- (3200 w and 1250 w)

Q5-(A)-Select the correct answer for the alternatives given. 1- he secondary winding of which of the following transformer is always kept close a)- power transformer b)- auto-transformer c)- current transformer d)- distribution transformer 2-In transformer ,the load current at maximum efficiency is equal to rated load current multiplied by PL d)- Pcu a)- Peu PL b)- [ Pcu Pcu Pi 3-which of the following does not change in transformer a)-current b)-voltage c)- frequency d)-all of the above 4-The full-load copper loss and iron loss of transformer are 6400w and 500w respectively. The copper loss and iron loss at half load will be respectively. a)-(3200 w and 2500 w) b)- (1600 w and 1250 w) c)- (1600 w and 5000w ) d)- (3200 w and 1250 w)

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Q5-(A)-Select the correct answer for the alternatives given. 1- he secondary winding of which of the following transformer is always kept close a)- power transformer b)- auto-transformer c)- current transformer d)- distribution transformer 2-In transformer ,the load current at maximum efficiency is equal to rated load current multiplied by PL d)- Pcu a)- Peu PL b)- [ Pcu Pcu Pi 3-which of the following does not change in transformer a)-current b)-voltage c)- frequency d)-all of the above 4-The full-load copper loss and iron loss of transformer are 6400w and 500w respectively. The copper loss and iron loss at half load will be respectively. a)-(3200 w and 2500 w) b)- (1600 w and 1250 w) c)- (1600 w and 5000w ) d)- (3200 w and 1250 w)
Transcribed Image Text:Q5-(A)-Select the correct answer for the alternatives given. 1- he secondary winding of which of the following transformer is always kept close a)- power transformer b)- auto-transformer c)- current transformer d)- distribution transformer 2-In transformer ,the load current at maximum efficiency is equal to rated load current multiplied by PL d)- Pcu a)- Peu PL b)- [ Pcu Pcu Pi 3-which of the following does not change in transformer a)-current b)-voltage c)- frequency d)-all of the above 4-The full-load copper loss and iron loss of transformer are 6400w and 500w respectively. The copper loss and iron loss at half load will be respectively. a)-(3200 w and 2500 w) b)- (1600 w and 1250 w) c)- (1600 w and 5000w ) d)- (3200 w and 1250 w)
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