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GENERATION AND TRANSMISSION
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1) Which principle auto transformer works?
Lenzs law
Flemings right hand rule
Self induction
Mutual induction
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Correct Answer: Self induction
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1) Which principle auto transformer works?
Lenzs law
Flemings right hand rule
Self induction
Mutual induction
2) Where synthetic liquid transformer oil is used?
Generating station transformers
Primary substation transformers
Refineries and hazardous location
Secondary substation transformers
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Correct Answer: Refineries and hazardous location
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2) Where synthetic liquid transformer oil is used?
Generating station transformers
Primary substation transformers
Refineries and hazardous location
Secondary substation transformers
3) Which part produces magnetic flux in a transformer?
Primary winding
Secondary winding
Tap charger
Core
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Correct Answer: Core
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3) Which part produces magnetic flux in a transformer?
Primary winding
Secondary winding
Tap charger
Core
4) Which is the function of breather in transformer?
Observes heat
Indicate oil level
Prevents the moisture entry
Reduces tank pressure
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Correct Answer: Prevents the moisture entry
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4) Which is the function of breather in transformer?
Observes heat
Indicate oil level
Prevents the moisture entry
Reduces tank pressure
5) Why the transformer core is laminated?
To minimise the hysteresis losses
To minimise the eddy current loss
To minimise the copper loss
To minimise the friction loss
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Correct Answer: To minimise the eddy current loss
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5) Why the transformer core is laminated?
To minimise the hysteresis losses
To minimise the eddy current loss
To minimise the copper loss
To minimise the friction loss
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