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Transformers
When load on a transformer is decreased, ______loss is decreased
Eddy current
Friction
Copper
Hysteresis
Eddy current
Friction
Copper
Hysteresis
Answer
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Related Question
Transformers
The short circuit test helps us to find
Iron loss at no load
None of the listed here
Cu loss at no load
Cu loss at any desire load
Iron loss at no load
None of the listed here
Cu loss at no load
Cu loss at any desire load
Answer
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Transformers
A tap changer is used on a transformer for
None of the listed here
Adjustment in both primary and secondary
Adjustment in primary voltage
Adjustments in secondary voltage
None of the listed here
Adjustment in both primary and secondary
Adjustment in primary voltage
Adjustments in secondary voltage
Answer
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Transformers
In Ns is the synchronous speed and s the slip, then actual running speed of an induction motor will be
(l-s)Ns
Ns
(Ns-l)s
s.N.
(l-s)Ns
Ns
(Ns-l)s
s.N.
Answer
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Transformers
No-load on a transformer is carried out to determine
magnetising current
magnetising current and loss
efficiency of the transformer
copper loss
magnetising current
magnetising current and loss
efficiency of the transformer
copper loss
Answer
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Transformers
The primary winding of a transformer has 110 V ac across it. What is the secondary voltage if the turns ratio is 8?
8.8 V
880 V
88 V
8,800 V
8.8 V
880 V
88 V
8,800 V
Answer
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