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Reciprocal of impedence is know as

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The magnetising current of a transformer is usually small because it has small air gap.

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The secondary of a current transformer is always short-circuited under operating conditions because it?

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In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of?

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When secondary of a current transformer is open-circuited its iron core will be?

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For a transformer, operating at constant load current, maximum efficiency will occur at?

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The voltage transformation ratio of a transformer is equal to the ratio of?

asked Mar 19, 2018 in Transformer by Shimroz123
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The size of a transformer core will depend on?

asked Mar 19, 2018 in Transformer by Shimroz123
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The path of magnetic flux in a transformer should have?

asked Mar 19, 2018 in Transformer by Shimroz123
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The noise produced by a transformer is termed as?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 11 views

If a transformer is continuously operated the maximum temperature rise will occur in?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 16 views

The hum in a transformer is mainly attributed to?

asked Mar 19, 2018 in Transformer by Shimroz123
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The maximum load that a power transformer can carry is limited by its?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 18 views

If a transformer is switched on to a voltage more than the rated voltage?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 17 views

The changes in the volume of transformer cooling oil due to the variation of atmospheric temperature during day and night is taken care of by which part of the transformer?

asked Mar 19, 2018 in Transformer by Zeeshan
1 answer 14 views

Part of the transformer which is most subject to damage from overheating is?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 26 views

The dielectric strength of transformer oil is expected to be?

asked Mar 19, 2018 in Transformer by Shimroz123
2 answers 73 views

 The no-load current drawn by transformer is usually what per cent of the full-load current ?

asked Mar 27, 2018 in Transformer by Shimroz123
1 answer 21 views

The operating point of a protective current transformer is near the

asked May 8, 2018 in Switchgear And Protection by Shimroz123
2 answers 38 views

The inrush current of a transformer at no load is maximum if the supply voltage is switched on  (1) at peak voltage value (2) at zero voltage value (3) at half voltage value (4) at 0.866 time voltage value

asked Apr 30, 2018 in Switchgear And Protection by Shimroz123
1 answer 26 views

During open circuit test of a transformer?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 15 views

In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes are?

asked Mar 19, 2018 in Transformer by Shimroz123

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