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TRANSFORMERS

Transformers
When the secondary of a transformer is short circuited, the primary inductance _______

Remians unchanged
Is decreased
None of the listed here
Is increased

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Transformers
Transformer having ratings less than 5kVA are generally ______

Water cooled
Oil cooled
None of the listed here
Natural air cooled

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

Is increased
None of the listed here
Is decreased
Remains unchanged

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Transformers
The transformer that should never the secondary open circuited when primary is energised is _______

Power transformer
Current transformer
Voltage transformer
Auto transformer

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Transformers
When load on a transformer is decreased, ______loss is decreased

Hysteresis
Eddy current
Friction
Copper

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