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Transformers
In a certain loaded transformer, the secondary voltage is one-fourth the primary voltage. The secondary current is
one-fourth the primary current and equal to the primary current
equal to the primary current
four times the primary current
one-fourth the primary current
one-fourth the primary current and equal to the primary current
equal to the primary current
four times the primary current
one-fourth the primary current
Answer
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Related Question
Transformers
A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is
0.4
0.2
5
25
0.4
0.2
5
25
Answer
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Transformers
The core type transformer provides _______
Lesser average length per turn
None of the listed here
Much longer magnetic path
Shorter magnetic path
Lesser average length per turn
None of the listed here
Much longer magnetic path
Shorter magnetic path
Answer
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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
The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 load. The turns ratio is 3:1. What is the secondary voltage?
180 V
2 V
20 V
18 V
180 V
2 V
20 V
18 V
Answer
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Transformers
A tap changer is used on a transformer for
Adjustments in secondary voltage
Adjustment in primary voltage
None of the listed here
Adjustment in both primary and secondary
Adjustments in secondary voltage
Adjustment in primary voltage
None of the listed here
Adjustment in both primary and secondary
Answer
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