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Wireman
GENERATION AND TRANSMISSION
Set 2
Set 2
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Q13982
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Which is denoted by the letter qm in the formula 4.44 FNqm ?
A
Maximum flux
B
No of turns in primary
C
No of turns in secondary
D
Frequency
Q13983
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What is the name of transformer if the transformation ratio (K) is more than 1?
A
Step down transformer
B
Unity ratio transformer
C
Step up transformer
D
Auto transformer
Q13984
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Which factor the copper loss of a transformer depends?
A
Current
B
Voltage
C
Square of current
D
Square of voltage
Q13985
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Which is having high efficiency?
A
Transformer
B
Alternator
C
AC motor
D
DC motor
Q13986
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Which material is used for transformer bushings?
A
PVC
B
Porcelain
C
Plastic
D
Baklite
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