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Transformers
Efficiency of a power transformer is of the order of
100 per cent
25 per cent
98 per cent
50 per cent
100 per cent
25 per cent
98 per cent
50 per cent
Answer
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Related Question
Transformers
No-load on a transformer is carried out to determine
magnetising current
copper loss
efficiency of the transformer
magnetising current and loss
magnetising current
copper loss
efficiency of the transformer
magnetising current and loss
Answer
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Transformers
Material used for construction of transformer core is usually
Aluminium
Wood
Copper
Silicon steel
Aluminium
Wood
Copper
Silicon steel
Answer
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Transformers
The maximum efficiency of a distribution transformer is
at 50% full load
at 80% full load
at no load
at full load
at 50% full load
at 80% full load
at no load
at full load
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
48 V
0 V
6 V
0.75 V
48 V
0 V
6 V
Answer
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Transformers
Which of the following transformer should never have the secondary open circuited while the primary is energised?
Potential transformer
Power transformer
Auto transformer
Current transformer
Potential transformer
Power transformer
Auto transformer
Current transformer
Answer
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