Electrical Engineering Materials MCQ Questions & Answers

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Learn Electrical Engineering Materials MCQ questions & answers are available for a Electrical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Electrical Engineering Materials MCQ question is the important chapter for a Electrical Engineering and GATE students. Page-6 section-1

The value of critical field below the transition temperature will

A) Increase B) Decrease C) Remain unchanged D) Any of the above

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Is viscoelastic.

A) Cast-iron B) Graphite C) Rubber D) Glass

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which of the following factors affect resistivity of metals ?

A) Age hardening B) Alloying C) Temperature D) Cold work E) All of the above

Discuss

Answer & Solution

Answer: Option E

No explanation is given for this question. Let's Discuss on Board

By increasing impurity content in the metal alloy the residual resistivity always

A) Decreases B) Increases C) Remains constant D) Becomes temperature independent

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Carbon bearings are used under which of the following conditions ?

A) Where lubrication is difficult or im-possible B) Where corrosive chemical action exists C) Where high temperature exists D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

For a hole which of the following statements is incorrect ?

A) Holes can exist in certain semiconductors only B) Holes can exist in any material including conductors C) Holes may constitute an electric current D) Holes can be considered as a net positive charge

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Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Substances whose specific resistance abruptly decreases at very low temperature are called

A) Insulators B) Conductors C) Semiconductors D) Superconductors

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The impurity atoms is semiconductors

A) Inject more charge carriers B) Reduce the energy gap C) Increase the kinetic energy of valence electrons D) All of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The photo-electric effect occurs only when the incident light has more than a certain critical

A) Intensity B) Speed C) Frequency D) Wave length

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Carbon rods are used in wet and dry cells because

A) Carbon rod serves as conductor B) Carbon can resist the attack of battery acid C) Both A and B D) Either A or B

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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Electrical Engineering Materials MCQ Questions & Answers | Electrical Engineering