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Transformers
Leakage flux in a transformer occurs because
Air is not a good magnetic insulator
Iron core has high permeability
Transformer is not an efficient device
Applied voltage is sinusoidal
Air is not a good magnetic insulator
Iron core has high permeability
Transformer is not an efficient device
Applied voltage is sinusoidal
Answer
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Related Question
Transformers
Burden of a current transformer is usually expressed in
Kilowatt
Amperes
Volts
Volt amperes
Kilowatt
Amperes
Volts
Volt amperes
Answer
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Transformers
The primary winding of a power transformer should always be
fused
switched
shorted
open
fused
switched
shorted
open
Answer
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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
more than 15 A
None of these
less than 15 A
15 A
more than 15 A
None of these
less than 15 A
15 A
Answer
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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
Ampere turns and voltage per turns
Currents and induced voltages
None of the listed here
Resistance and leakage reactances
Answer
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Transformers
The maximum load that a power transformer can carry is limited by its
dielectric strength of oil
copper loss
temperature rise
voltage ratio
dielectric strength of oil
copper loss
temperature rise
voltage ratio
Answer
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