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Transformers

Transformers
The highest voltage for transmitting electrical power in india is

66 kV
400 kV
132 kV
33 kV

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Transformers
Transformer breaths in when

load on it decreases
load on it increases
load remains constant
None of these

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Transformers
Two things which are same for primary and secondary of transformer are ______

Ampere turns and voltage per turns
Currents and induced voltages
None of the listed here
Resistance and leakage reactances

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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 dielectric strength of transformer oil is expected to be

lkV
33 kV
330 kV
100 kV

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Transformers
The steel used for transformer core has

High silicon content
All of the listed here
Low hysteresis loss
High permeability

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