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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?
2 V
18 V
20 V
180 V
2 V
18 V
20 V
180 V
Answer
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Related Question
Transformers
When a 6 V battery is connected across the primary of a transformer with a turns ratio of 8, the secondary voltage is
6 V
0 V
0.75 V
48 V
6 V
0 V
0.75 V
48 V
Answer
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Transformers
A tap changer is used on a transformer for
None of the listed here
Adjustments in secondary voltage
Adjustment in primary voltage
Adjustment in both primary and secondary
None of the listed here
Adjustments in secondary voltage
Adjustment in primary voltage
Adjustment in both primary and secondary
Answer
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Transformers
When the secondary of a transformer is short circuited, the primary inductance _______
Is decreased
Remians unchanged
Is increased
None of the listed here
Is decreased
Remians unchanged
Is increased
None of the listed here
Answer
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Transformers
Short circuit test on transformers is conducted to determine
copper losses
eddy current losses
core losses
hysteresis losses
copper losses
eddy current losses
core losses
hysteresis losses
Answer
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Transformers
The permissible flux density in case of cold rolled grain oriented steel is around
4.7 Wb/m²
2.7 Wb/m²
3.7 Wb/m²
1.7 Wb/m²
4.7 Wb/m²
2.7 Wb/m²
3.7 Wb/m²
1.7 Wb/m²
Answer
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