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Transformers
The main reason for generation of harmonics in a transformer could be
saturation of core
mechanical vibrations
poor insulation
fluctuating load
saturation of core
mechanical vibrations
poor insulation
fluctuating load
Answer
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Related Question
Transformers
Transformer breaths in when
load on it increases
load on it decreases
load remains constant
None of these
load on it increases
load on it decreases
load remains constant
None of these
Answer
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Transformers
The noise resulting from vibrations of laminations set by magnetic forces, is termed as
Hum
Magnetostriction
Zoom
Boo
Hum
Magnetostriction
Zoom
Boo
Answer
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Transformers
No-load on a transformer is carried out to determine
efficiency of the transformer
magnetising current and loss
magnetising current
copper loss
efficiency of the transformer
magnetising current and loss
magnetising current
copper loss
Answer
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Transformers
Which of the following transformer should never have the secondary open circuited while the primary is energised?
Power transformer
Potential transformer
Auto transformer
Current transformer
Power transformer
Potential transformer
Auto transformer
Current transformer
Answer
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Transformers
In a certain transformer, the input power to the primary is 120 W. If 8.5 W are lost to the winding resistance, what is the output power to the load, neglecting any other issues?
111.5 W
14.1 W
0 W
1,020 W
111.5 W
14.1 W
0 W
1,020 W
Answer
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