Transformers — 8 | Electrical Engineering MCQ Question Answer

#1 In a power transformer the efficiency should be maximum at

full load

#2 For minimum weight of a transformer, the weight of iron should be

equal to the weight of copper

#3 The iron loss of a transformer can be calculated by knowing the weights of

cores and yokes

#4 H.R.C. fuses on a transformer provide protection against

external  faults

#5 Which of the following insulating materials is used in power transformers ?

All of the above

#6 Simple porcelain bushing, an used for transformers up to

11 kV

#7 Oil impregnated paper condenser bushing for generally used on transformer operating

132 kV

#8 The color of fresh dielectric oil for a transformer is

pale yellow

#9 Which of the following test on a transformer provides information about regulation, efficiency and heating under load conditions?

Back to back test

#10 Buchholz relay is used on

oil cooled transformers

#11 The kVA rating ratio of transformers operating in parallel, as a general rule, should be within

3:1

#12 Which value of flux is involved in the e.m.f equation of the transformer?

Maximum value

#13 In Scott connections the main transformer has centre tap on

both primary and secondary winding

#14 In a transformer over currents affect

all of the above

#15 For transformers up to a capacity of ……… kVA air blast cooling is provided.

10000

#16 As the supply frequency of a transformer increases its rating

increases

#17 Which of the following methods is used for cooling of transformers up to a capacity of 10 MVA?

oil natural cooling

#18 The nominal short-circuit voltage of the transformer is defined as percentage of ….

the rated primary voltage

#19 A distribution transformer has low flux density because

it is constantly connected to the supply

#20 Spiral core transformer which has core made up of steel strip has the following advantage.

All above

#21 A transformer designed for installation in a tropical country if installed in a cold country

is to be loaded in excess of the name plate kVA rating

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Electrical Engineering MCQ Question Answer

 
On my blog, I have started this new section “Electrical Engineering MCQ Question Answer” on the repeated demand on my readers. I hope this section will prove helpful for electrical engineering students who are preparing for different competitive exams.
 
The world of today is an arena of competition. Almost in every sphere of life we have to face competition to get vertical for even horizontal mobility. Specifically, students have to pass Competitive Examinations for seeking admission to higher level education in different areas of specialization as well as for seeking jobs in areas of their choice. Even the persons in job have to pass competitive examinations to get higher posts.
 
This MCQ section is an honest effort towards fulfilling these aspirations in fields connected with “Electrical Engineering”.
The questions have been framed in such a way that maximum important information is made available to the reader on various topics covered under the subject of “Electrical Engineering”.
Any suggestion and constructive criticism will be always wellcome for further improvement of this MCQ section.
 
Electrical engineering mcq question answer are finding favor with various examining organizations. These tests generally contain multiple choice questions in which four or five possible answers are offered and the job of an examinee is to select only the best answer. Sometimes the incorrect answers provided are partially correct. These partially true choices are inserted to force the candidate to think and establish that he knows the correct answer.

  • Hints for Identifying the Correct Answer
  • Read the item closely to see what the examiner is after.
  • Re-read if necessary.
  • Mentally reject answers that are clearly wrong.
  • Identify the most correct answer.
  • In the case of items where you are doubtful of the answer, you might be able to bring to bear the information you have gained from your previous study. This knowledge might be sufficient to indicate that some of the suggested answers are not so plausible. Eliminate such answers from further consideration.
  • Then concentrate on the remaining suggested answers. The more you eliminate in this way, the better your chances of getting the right item.
  • The pressure of time compels for speedy identification of correct answers. If you have identified the correct answer, switch over to the next question.
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