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Transformers
An open-circuit test on a transformer is conducted primarily to measure
core loss
total loss
insulation resistance
copper loss
core loss
total loss
insulation resistance
copper loss
Answer
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Related Question
Transformers
Short circuit test on transformers is conducted to determine
copper losses
core losses
hysteresis losses
eddy current losses
copper losses
core losses
hysteresis losses
eddy current losses
Answer
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Transformers
A transformer with a 110 V primary has a 15:1 turns ratio. The load resistance, RL, is 120 . What is the approximate voltage across the load?
7.3 V
88 V
73 V
880 V
7.3 V
88 V
73 V
880 V
Answer
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Transformers
A no-load test is performed on a transformer to determine
copper loss
magnetising current and loss
magnetising current
core loss
efficiency
copper loss
magnetising current and loss
magnetising current
core loss
efficiency
Answer
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Transformers
Natural oil cooling is used for transformers upto a rating of
500 kVA
1000 kVA
3000 kVA
250 kVA
500 kVA
1000 kVA
3000 kVA
250 kVA
Answer
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Transformers
No-load current of a transformer has
has small magnitude and high power factor
has high magnitude and high power factor
has high magnitude and low power factor
has small magnitude and low power factor
has small magnitude and high power factor
has high magnitude and high power factor
has high magnitude and low power factor
has small magnitude and low power factor
Answer
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