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Transformers

Transformers
A transformer oil must be free from

Gases
Moisture
Sludge
Odour

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Transformers
When load on a transformer is increased, the eddy current _____

Is increased
Is decreased
Remains unchanged
None of the listed here

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Transformers
The power transformer is a constant

Current device
Main flux device
Power device
Voltage device

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Transformers
A common method of cooling a power transformer is

natural air cooling
air blast cooling
oil cooling
Any of these

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Transformers
A transformer has 200 W as iron loss at full load. The iron loss at full load. The iron loss at half full load will be

400 W
50 W
100 W
200 W

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Transformers
A transformer does not posses ______changing property.

Impedance
Voltage
Current
Power

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