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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
15 A
None of these
less than 15 A
more than 15 A
15 A
None of these
less than 15 A
Answer
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Related Question
Transformers
Burden of a current transformer is usually expressed in
Volt amperes
Amperes
Volts
Kilowatt
Volt amperes
Amperes
Volts
Kilowatt
Answer
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Transformers
The transformer that should never the secondary open circuited when primary is energised is _______
Voltage transformer
Current transformer
Power transformer
Auto transformer
Voltage transformer
Current transformer
Power transformer
Auto transformer
Answer
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Transformers
When a 6 V battery is connected across the primary of a transformer with a turns ratio of 8, the secondary voltage is
0.75 V
6 V
0 V
48 V
0.75 V
6 V
0 V
48 V
Answer
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Transformers
Cores of large transformers are built upto nearly circular cross section in order to reduce
Leakage reactance
Eddy current loss
Iron losses
Copper loss
Leakage reactance
Eddy current loss
Iron losses
Copper loss
Answer
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Transformers
When load on a transformer is decreased, ______loss is decreased
Eddy current
Copper
Friction
Hysteresis
Eddy current
Copper
Friction
Hysteresis
Answer
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