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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 V
6 V
0.75 V
48 V
0 V
6 V
0.75 V
48 V
Answer
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Related Question
Transformers
A transformer will have zero efficiency at
No load
Half full load
None of the listed here
Full load
No load
Half full load
None of the listed here
Full load
Answer
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Transformers
Losses which occur in rotating electric machines and do not occur in trans formers are
friction and windage losses
copper losses
magnetic losses
hysteresis and eddy current losses
friction and windage losses
copper losses
magnetic losses
hysteresis and eddy current losses
Answer
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Transformers
The open circuit test on a transformer gives _______
Iron losses
Total losses
Copper losses
Friction losses
Iron losses
Total losses
Copper losses
Friction losses
Answer
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Transformers
The path of the magnetic flux in transformer should have
high reluctance
low resistance
high resistance
low reactance
high reluctance
low resistance
high resistance
low reactance
Answer
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Transformers
When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is
2,400 V
12 V
240 V
120 V
2,400 V
12 V
240 V
120 V
Answer
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