Transformers Mcqs
Transformers Mcqs, this topic has 134 mcqs, It takes five to ten minutes to complete this free Transformers Mcqs test. You will see 4 or 5 option of each question. You must choose / think only one option and then press on answer key for check right answer. Practice "Transformers Mcqs" MCQs and share with your friends, brothers, sisters.
Transformers Mcqs (Total Quiz: 134)
MCQ: Which of the following is not a part of transformer installation ?
- Conservator
- Breather
- Buchholz relay
- Exciter
D
MCQ: The purpose of providing an iron core in a transformer is to_____________?
- provide support to windings
- reduce hysteresis loss
- decrease the reluctance of the magnetic path
- reduce eddy current losses
C
MCQ: No-load current in a transformer________________?
- lags behind the voltage by about 75°
- leads the voltage by about 75°
- lags behind the voltage by about 15°
- leads the voltage by about 15°
A
MCQ: The efficiency of a transformer will be maximum when_____________?
- copper losses = hysteresis losses
- hysteresis losses = eddy current losses
- eddy current losses = copper losses
- copper losses = iron losses
D
MCQ: The permissible flux density in case of cold rolled grain oriented steel is around__________?
- 1.7 Wb/m2
- 2.7 Wb/m2
- 3.7 Wb/m2
- 4.7 Wb/m2
A
MCQ: Sumpner’s test is conducted on transformers to determine_____________?
- temperature
- stray losses
- all-day efficiency
- none of the above
A
MCQ: The dielectric strength of transformer oil is expected to be______________?
- lkV
- 33 kV
- 100 kV
- 330 kV
B
MCQ: No-load on a transformer is carried out to determine______________?
- copper loss
- magnetising current
- magnetising current and loss
- efficiency of the transformer
C
MCQ: The path of a magnetic flux in a transformer should have______________?
- high resistance
- high reluctance
- low resistance
- low reluctance
D
MCQ: The no-load current drawn by transformer is usually what per cent of the full-load current ?
- 0.2 to 0.5 per cent
- 2 to 5 per cent
- 12 to 15 per cent
- 20 to 30 per cent
B