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Transformers
The maximum load that a power transformer can carry is limited by its
copper loss
voltage ratio
temperature rise
dielectric strength of oil
copper loss
voltage ratio
temperature rise
dielectric strength of oil
Answer
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Related Question
Transformers
The maximum efficiency of a distribution transformer is
at 80% full load
at 50% full load
at full load
at no load
at 80% full load
at 50% full load
at full load
at no load
Answer
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Transformers
Leakage flux in a transformer occurs because
Iron core has high permeability
Transformer is not an efficient device
Applied voltage is sinusoidal
Air is not a good magnetic insulator
Iron core has high permeability
Transformer is not an efficient device
Applied voltage is sinusoidal
Air is not a good magnetic insulator
Answer
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Transformers
Burden of a current transformer is usually expressed in
Amperes
Volt amperes
Kilowatt
Volts
Amperes
Volt amperes
Kilowatt
Volts
Answer
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Transformers
If a transformer has 50 turns in the primary winding and 10 turns in the secondary winding, what is the reflective resistance if the secondary load resistance is 250 ?
62500 Ω
250 Ω
6250 Ω
25 Ω
62500 Ω
250 Ω
6250 Ω
25 Ω
Answer
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Transformers
Which of the following acts as a protection against high voltage surges due to lightning and switching?
Breather
Thermal overload relays
Conservator
Horn gaps
Breather
Thermal overload relays
Conservator
Horn gaps
Answer
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