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Transformers
No-load on a transformer is carried out to determine
magnetising current
copper loss
magnetising current and loss
efficiency of the transformer
magnetising current
copper loss
magnetising current and loss
efficiency of the transformer
Answer
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Related Question
Transformers
Which of the following acts as a protection against high voltage surges due to lightning and switching?
Horn gaps
Conservator
Thermal overload relays
Breather
Horn gaps
Conservator
Thermal overload relays
Breather
Answer
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Transformers
The dielectric strength of transformer oil is expected to be
lkV
33 kV
100 kV
330 kV
lkV
33 kV
100 kV
330 kV
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
240 V
120 V
2,400 V
12 V
240 V
120 V
2,400 V
12 V
Answer
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Transformers
The amount of copper in the primary is _______that of secondary.
About the same as
None of the listed here
Greater than
Smaller than
About the same as
None of the listed here
Greater than
Smaller than
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
8.8 V
88 V
8,800 V
880 V
8.8 V
88 V
8,800 V
Answer
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