Test: 3-Phase Transformers - Electrical Engineering
Advertisements
Best Transformer MCQ Questions and Answers for the best preparation for the Transformer & Electrical Engineering Exams and interviews.
- copper loss
- dielectric strength of oil
- Voltage ratio
- temperature rise
Question 1: The maximum load that a power transformer can carry is limited by its?
Answers: Voltage ratio
- 50% load
- 90% load
- zero load
- 25% load
Question 2: Distribution transformers are generally designed for maximum efficiency around ?
Answers: 50% load
- none of the above
- zero
- high
- low
Question 3: Transformer for constant voltage applications is considered good if its voltage regulation is?
Answers: low
- 80 % full load
- full load
- 50 % of full load
- 60 % full load
Question 4: ln a power transformer the efficiency should be maximum at?
Answers: full load
- high voltage winding of small rating transformers
- none of the above
- low voltage winding of large rating transformers
- high voltage winding of large rating transformers
Question 5: Helical coils are very well suited for?
Answers: low voltage winding of large rating transformers
- 10% of total loss
- 20% of total loss
- 5% of total loss
- none of the above
Question 6: In a transformer frictional loss is?
Answers: none of the above
- at full load
- at 50% full load
- at 75% full load
- at no load
Question 7: The maximum efficiency of a distribution transformer is ?
Answers: at 50% full load
- hysteresis losses = eddy current losses
- eddy current losses = copper losses
- copper losses = iron losses
- copper losses = hysteresis losses
Question 8: The efficiency of a transformer will be maximum when ?
Answers: copper losses = iron losses
- core loss
- total loss
- copper loss
- insulation resistance
Question 9: An open-circuit test on a transformer is conducted primarily to measure?
Answers: core loss
- any of the above
- decrease
- not change
- increase
Question 10: If the supply frequency to the transformer is increased the iron loss will ?
Answers: increase
Report Card
Total Questions Attempted: 0
Correct: 0 Wrong: 0
--
Advertisements
Related Articles
Transformer MCQ
Electrical Engineering Multiple Choice Questions and Answers-MCQs Preparation for Engineering Competitive...
Transformer MCQ
Transformer MCQ Questions and Answers for the best preparation for the Transformer & Electrical...
Transformer MCQ
MCQ of Transformers Shape of EMF Generated by delta-connected transformer is not always sinusoidal. which of...