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Transformers

Transformers
Which of the following is not a part of transformer installation?

Exciter
Conservator
Breather
Buchholz relay

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Transformers
Which of the following property is not necessarily desirable in the material for transformer core?

High permeability
High thermal conductivity
Mechanical strength
Low hysteresis loss

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

15 A
more than 15 A
None of these
less than 15 A

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Transformers
In which of the following transformer part of primary winding also serves as the secondary winding?

Auto transformer
Step-up transformer
Current transformer
Potential transformer

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Transformers
In a certain loaded transformer, the secondary voltage is one-fourth the primary voltage. The secondary current is

one-fourth the primary current and equal to the primary current
one-fourth the primary current
four times the primary current
equal to the primary current

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Transformers
The iron core is used to ______of the transformer.

Increase the wight
None of the listed here
Reduce core loss
Provide tight magnetic coupling

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MORE MCQ ON Transformers

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