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Transformers
The mutual flux in a transformer remains constant at all loads because ______
Losses are small
Applied voltage and frequency are constant
Iron core is used
Leakage flux is small
Losses are small
Applied voltage and frequency are constant
Iron core is used
Leakage flux is small
Answer
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Related Question
Transformers
A transformer has 200 W as iron loss at full load. The iron loss at full load. The iron loss at half full load will be
100 W
400 W
50 W
200 W
100 W
400 W
50 W
200 W
Answer
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Transformers
The efficiency of a transformer will be maximum when ______
Copper loss is equal to constant loss
None of the listed here
Resistance of the two winding are equal
Leakage reactance of the two winding
Copper loss is equal to constant loss
None of the listed here
Resistance of the two winding are equal
Leakage reactance of the two winding
Answer
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Transformers
By laminating the core of a transformer, we decrease _____
Hysteresis loss
Eddy current loss
Copper loss
Leakage reactance
Hysteresis loss
Eddy current loss
Copper loss
Leakage reactance
Answer
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Transformers
The highest voltage for transmitting electrical power in india is
400 kV
66 kV
33 kV
132 kV
400 kV
66 kV
33 kV
132 kV
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
None of these
less than 15 A
more than 15 A
15 A
None of these
less than 15 A
more than 15 A
15 A
Answer
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