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-8 section-1

A carbon resistor contains

A) Carbon crystals B) Solid carbon granules C) Pulverized coal D) Finely divided carbon black.

Discuss

Answer & Solution

Answer: Option D

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

Which of the following material is not a semiconductor ?

A) Silica B) Germanium C) Selenium D) Gallium-arsenide

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Answer & Solution

Answer: Option A

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

Which of the following materials is preferred for transmitting electrical energy over long distance ?

A) Copper B) Aluminium C) Steel reinforced copper D) Steel reinforced aluminium

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Answer & Solution

Answer: Option D

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

The forbidden gap in an insulator is

A) Large B) Small C) Nil D) Any of the above

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Answer & Solution

Answer: Option A

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

Platinum is used in

A) Electrical contacts B) Thermocouple C) Heating element in high temperature furnace D) Grids of special purpose vacuum tubes E) All of the above

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Answer & Solution

Answer: Option E

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

In a crystal, an atom vibrates at a frequency determined by

A) The heat content of the crystal B) The temperature of the crystal C) The stiffness of the bonds it makes with neighbors D) All of the above

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Answer & Solution

Answer: Option C

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Due to which of the following reasons copper and aluminium are not used for heating elements ?

A) Both have great tendency for oxidation B) Both have low melting point C) Very large length of wires will be required D) All of the above

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Answer & Solution

Answer: Option D

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Thermocouples are mainly used for the measurement of

A) Temperature B) Resistance C) Eddy currents D) Coupling co-efficient

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Answer & Solution

Answer: Option A

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

Which of the following high resistance materials has the highest operating temperature ?

A) Kanthal B) Manganin C) Nichrome D) Eureka

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Answer & Solution

Answer: Option A

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

The transition temperature of mercury is

A) 18.0°K B) 9.22°K C) 4.12°K D) 1.14°K

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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