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Mcqs

Transformer Mcqs

Our 1000+ Transformers MCQs (Multiple Choice Questions and Answers) focus on all areas of Transformers covering 100+ topics. These topics are chosen from a collection of the most authoritative and best reference books on Transformers. One should spend 1 hour daily practicing these MCQs for 2-3 months to learn and assimilate Transformer's subject comprehensively. This way of systematic learning will prepare anyone easily for Transformers exams, contests, online tests, quizzes, MCQ-tests, viva-voce, interviews, and certifications.

 

Transformers Multiple Choice Questions Highlights

  • 1000+ Multiple Choice Questions & Answers (MCQs) in Transformers with a detailed explanation of every question.
  • These MCQs cover theoretical concepts, true-false(T/F) statements, fill-in-the-blanks, and match the following style statements.
  • These MCQs also cover numerical as well as diagram-oriented MCQs.
  • These MCQs are organized chapterwise and each Chapter is further organized topicwise.
  • Every MCQ set focuses on a specific topic of a given Chapter in Transformers Subject.

 

Who should Practice Transformers MCQs?

  • Students who are preparing for college tests and exams such as mid-term tests and semester tests on Transformers.
  • Students who are preparing for Online/Offline Tests/Contests in Transformers.
  • Students who wish to sharpen their knowledge of Transformers Subject.
  • Anyone preparing for Aptitude test in Transformers.
  • Anyone preparing for interviews (campus/off-campus interviews, walk-in interviews, and company interviews).
  • Anyone preparing for entrance examinations and other competitive examinations.
  • All - Experienced, Freshers and College / School Students.
Latest Popular
Q:

Which of the following protective component is not provided on small distribution transformers?

A) Overfluxing protection B) Buchholz relay
C) Overcurrent protection D) Overcurrent and overvolt protection
 
Answer & Explanation Answer: B) Buchholz relay

Explanation: Class C dry-type transformers are those based on glass fibre-reinforced boards, aromatic polyamide paper conductor insulation and similar materials capable of operating at temperatures up to around 220°C. Generally small, lighter transformers are made of this type.

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Category: Electronics & Electrical MCQs
Sub Category: Transformer Mcqs

105
Q:

Which of the following can be used for HV winding in distribution transformers?

A) Coil winding B) Foil winding
C) Cross-over coil D) Single dash folding
 
Answer & Explanation Answer: C) Cross-over coil

Explanation: Another alternative for high-voltage windings is the use of ‘crossover’ coil which shows an individual coil. Each section of the winding, or coil, is itself a small multilayer spiral winding having a relatively short axial length.

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Category: Electronics & Electrical MCQs
Sub Category: Transformer Mcqs

87
Q:

Voltage per turn in distribution transformers is ____________

A) very high B) very low
C) depends on application D) depends on other components of system
 
Answer & Explanation Answer: B) very low

Explanation: Distribution transformers because of the small frame sizes resulting from low kVA ratings, the volts per turn is usually very low so that for a high-voltage winding a considerable number of turns will be required.

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Category: Electronics & Electrical MCQs
Sub Category: Transformer Mcqs

86
Q:

Foil winding provides ________________

A) less mechanical short circuit strength B) low degree of electromagnetic balance
C) high degree of electromagnetic balance D) can’t tell by just winding type
 
Answer & Explanation Answer: C) high degree of electromagnetic balance

Explanation: Foil winding arrangement represents a very cost-effective method of manufacturing low-voltage windings and also enables a transformer to be built which has a high degree of electromagnetic balance and hence good mechanical short-circuit strength.

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Category: Electronics & Electrical MCQs
Sub Category: Transformer Mcqs

232
Q:

Foil windings are used for distribution transformers _________________________

A) low voltage winding B) high voltage winding
C) for both windings D) not used
 
Answer & Explanation Answer: D) not used

Explanation: Foil windings are frequently used as low-voltage windings. In this form of construction, the winding turn, of copper or aluminium foil, occupies the full width of the layer. This is wound around a plain mandrel, with intermediate layers of paper insulation, to form the required total number of turns for the winding.

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Category: Electronics & Electrical MCQs
Sub Category: Transformer Mcqs

121
Q:

How power losses and noise levels are lowered down?

A) By using another core material B) By using step-lap construction
C) By using Different winding method D) By using different oil
 
Answer & Explanation Answer: B) By using step-lap construction

Explanation: The competitive nature of the industry, gives an incentive to provide low losses and noise levels in order to sustain in the market, both of which are improved by using the step-lap construction.

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Category: Electronics & Electrical MCQs
Sub Category: Transformer Mcqs

113
Q:

Joints are used in distribution transformers because _____________

A) smaller in size B) economical aspects
C) availability D) less losses
 
Answer & Explanation Answer: D) less losses

Explanation: Joints form a greater proportion of the total iron circuit in the case of a small distribution transformer core compared to that of a large power transformer and so, measures to reduce losses at the joints will show a greater benefit.

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Category: Electronics & Electrical MCQs
Sub Category: Transformer Mcqs

217
Q:

Distribution transformers have _______________

A) smaller size than Power transformer B) larger size than power transformers
C) size can be more or less depending on type D) more weight than power transformers
 
Answer & Explanation Answer: A) smaller size than Power transformer

Explanation: Distribution transformers are very likely to be made in a different factory from larger transformers. Being smaller and lighter they do not require the same specialised handling and lifting equipment as larger transformers. Impregnation under very high vacuum and vapour-phase drying equipment is not generally required.

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Category: Electronics & Electrical MCQs
Sub Category: Transformer Mcqs

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