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Transformers
Harmonics in transformer result in
All of the listed here
increased core losses
increased I2R losses
magnetic interference with communication circuits
All of the listed here
increased core losses
increased I2R losses
magnetic interference with communication circuits
Answer
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Related Question
Transformers
The output current corresponding to the maximum efficiency for a transformer having core loss of 200 W and equivalent resistance referred to secondary of 0.5 Ω is
20 A
5 A
10 A
15 A
20 A
5 A
10 A
15 A
Answer
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Transformers
The primary and secondary windings are wound on the top of each other in order to reduce ______
Iron losses
Copper losses
Leakage reactance
Winding resistance
Iron losses
Copper losses
Leakage reactance
Winding resistance
Answer
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Transformers
A common method of colling a power transformer is
Natural air cooling
Oil cooling
Air blast cooling
Any of the listed here
Natural air cooling
Oil cooling
Air blast cooling
Any of the listed here
Answer
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Transformers
A transformer oil must be free from
Sludge
Odour
Gases
Moisture
Sludge
Odour
Gases
Moisture
Answer
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Transformers
The efficiencies of transformers compared with that of electric motors of the same power are
somewhat smaller
much smaller
much higher
about the same
somewhat smaller
much smaller
much higher
about the same
Answer
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