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: The efficiency of a transformer, under heavy loads, is comparatively low because_______________?
- copper loss becomes high in proportion to the output
- iron loss is increased considerably
- voltage drop both in primary and secondary becomes large
- secondary output is much less as compared to primary input
A
MCQ: The maximum load that a power transformer can carry is limited by its________________?
- temperature rise
- dielectric strength of oil
- voltage ratio
- copper loss
C
MCQ: The hum in a transformer is mainly attributed to______________?
- load changes
- oil in the transformer
- magnetostriction
- mechanical vibrations
C
MCQ: Which of the following is the most likely source of harmonics in a transformer ?
- poor insulation
- Overload
- loose connections
- Core saturation
D
MCQ: If a transformer is continuously operated the maximum temperature rise will occur in_______________?
- core
- windings
- tank
- any of the above
B
MCQ: Iron loss of a transformer can be measured by____________?
- low power factor wattmeter
- unity power factor wattmeter
- frequency meter
- any type of wattmeter
A
MCQ: Which of the following loss in a transformer is zero even at full load ____________?
- Core loss
- Friction loss
- Eddy current loss
- Hysteresis loss
B
MCQ: Negative voltage regulation is indicative that the load is___________?
- capacitive only
- inductive only
- inductive or resistive
- none of the above
A
MCQ: Helical coils can be used on___________________?
- low voltage side of high kVA transformers
- high frequency transformers
- high voltage side of small capacity transformers
- high voltage side of high kVA rating transformers
A
MCQ: If the supply frequency to the transformer is increased,”the iron loss will__________?
- not change
- decrease
- increase
- any of the above
C