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Transformers
Transformer having ratings less than 5kVA are generally ______
Natural air cooled
Oil cooled
Water cooled
None of the listed here
Natural air cooled
Oil cooled
Water cooled
None of the listed here
Answer
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Related Question
Transformers
Two things which are same for primary and secondary of transformer are ______
None of the listed here
Ampere turns and voltage per turns
Currents and induced voltages
Resistance and leakage reactances
None of the listed here
Ampere turns and voltage per turns
Currents and induced voltages
Resistance and leakage reactances
Answer
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Transformers
A transformer transfers electrical energy from primary to secondary usually with a change in ______
Time period
Voltage
Frequency
Power
Time period
Voltage
Frequency
Power
Answer
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Transformers
The effect of leakage flux in a transformer is to ______
Increase copper losses
Decreases copper losses
Cause voltage drop in the windings
None of the listed here
Increase copper losses
Decreases copper losses
Cause voltage drop in the windings
None of the listed here
Answer
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Transformers
If a power transformer is operated at very high frequencies, then ______
Primary will draw large power
Core losses will be excessive
None of the listed here
Primary reactance is too much increased
Primary will draw large power
Core losses will be excessive
None of the listed here
Primary reactance is too much increased
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?
880 V
88 V
8.8 V
8,800 V
880 V
88 V
8.8 V
8,800 V
Answer
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