Electronics GK MCQ question and answer with solution

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The reverse biasing in a p-n junctions diode

A) decrease the potential barrier B) increase the potential barrier C) increase the number of minority charge carries D) increases the number of majority charge carries

Discuss

Answer & Solution

Answer: Option B

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

In atoms of germanium, arsenic, selenium and bromine there are . . . . . . . . orbits.

A) 7 B) 5 C) 3 D) 4

Discuss

Answer & Solution

Answer: Option D

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

When a piece of pure silicon is doped with aluminium, then

A) the conductivity of the doped silicon piece will remain the same B) the doped silicon piece will become n-type C) the doped silicon piece will become p-type D) the resistivity of the doped silicon piece will increase

Discuss

Answer & Solution

Answer: Option C

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

. . . . . . . . is a semiconductor

A) Pb B) Ga C) Sn D) Ge

Discuss

Answer & Solution

Answer: Option D

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

Light Emitting Diode (LED) is used in electronic devices, such as television emits . . . . . . . .

A) ultraviolet rays B) x-rays C) radio waves D) visible light

Discuss

Answer & Solution

Answer: Option C

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

Consider the following statements.
1. A p - n junction diode is a basic semiconductor device.
2. A p - n junction diode can work as excellent rectifier.
3. The p - n junction diode cannot be used as a half-wave rectifier.
Which of the statements given above is/are correct?

A) Only 1 B) Only 3 C) 1 and 2 D) All of these

Discuss

Answer & Solution

Answer: Option C

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

Avalanche breakdown is due to

A) collision of minority charge carrier B) increase in depletion layer thickness C) decrease in depletion layer thickness D) None of the above

Discuss

Answer & Solution

Answer: Option B

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

Silicon is which type of material?

A) Semiconductor B) Insulator C) Conductor D) No option is correct

Discuss

Answer & Solution

Answer: Option A

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

Consider the following statements.
1. Zener diode is not used as a voltage stabiliser.
2. A Solar cell is a p - n junction diode which converts electrical energy into solar energy.
3. LED is an important light source used in optical communication.
Which of the statement given above is/are correct?

A) Only 1 B) Only 3 C) 1 and 2 D) All of these

Discuss

Answer & Solution

Answer: Option B

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

In a bi-polar junction transistor,

A) all the three regions (the emitter, the base and the collector) have equal concentrations of impurity B) the emitter has the least concentration of impurity C) the collector has the least concentration of impurity D) the base has the least concentration of impurity

Discuss

Answer & Solution

Answer: Option D

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

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Electronics GK MCQ question and answer with solution | Physics Gk MCQs