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Transformers
Open circuit test on transformers is conducted to determine
hysteresis losses
copper losses
core losses
eddy current losses
hysteresis losses
copper losses
core losses
eddy current losses
Answer
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Related Question
Transformers
Natural oil cooling is used for transformers upto a rating of
500 kVA
1000 kVA
250 kVA
3000 kVA
500 kVA
1000 kVA
250 kVA
3000 kVA
Answer
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Transformers
Which of the following transformer is smallest?
2kVA, 500 Hz
2kVA, 200 Hz
2kVA, 50 Hz
2kVA, 400 Hz
2kVA, 500 Hz
2kVA, 200 Hz
2kVA, 50 Hz
2kVA, 400 Hz
Answer
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Transformers
The power efficiency of a lightning transformer is always ______its all day efficiency.
None of the listed here
Less than
Equal to
Higher than
None of the listed here
Less than
Equal to
Higher than
Answer
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Transformers
By laminating the core of a transformer, we decrease _____
Copper loss
Eddy current loss
Hysteresis loss
Leakage reactance
Copper loss
Eddy current loss
Hysteresis loss
Leakage reactance
Answer
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Transformers
Natural air cooling is generally restricted for transformers up to
5 MVA
50 MVA
15 MVA
1.5 MVA
5 MVA
50 MVA
15 MVA
1.5 MVA
Answer
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