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Electronics

Description: Electronics
Number of Questions: 15
Created by:
Tags: Electronics Some Special Sums Electronic Components Rectification Transistors and Amplification
Attempted 0/15 Correct 0 Score 0

Which of the following components is used to store electric charges and release them according to the requirement?

  1. Resistor

  2. Capacitor

  3. Inductor

  4. Transistor


Correct Option: B
Explanation:

Capacitors are the components used to store electric charges and release them according to the requirement.

Which of the following electric devices posses properties of conductors as well as insulators?

  1. Diode

  2. Resistor

  3. Semiconductor

  4. LED


Correct Option: C
Explanation:

Semiconductors are the electronic components which posses properties of conductors as well as insulators.

The ability to resist the variation of electric current is known as

  1. resistance

  2. capacitance

  3. inductance

  4. rectification


Correct Option: C
Explanation:

The ability to resist the variation of electric current is known as inductance. Because of the basic property of the inductor, it opposes the sudden change in current. If it doesn't oppose the current, then the voltage across the inductor should be infinite which is practicaly not possible with any finite source.

How many terminals are present in a transistor?

  1. 1

  2. 2

  3. 3

  4. 4


Correct Option: C
Explanation:

A transistor has 3 terminals.

Which of the following statements is/are true?

  1. Half wave rectifier allows AC to flow continuously in one direction.

  2. Full wave rectifier allows AC to flow continuously in one direction.

  3. Rectification is done by a device known as amplifier.

  4. All of the above


Correct Option: B
Explanation:

Full wave rectifier allows AC to flow continuously in one direction.

The process of converting alternating current (AC) into unidirectional current is known as

  1. amplification

  2. rectification

  3. electrification

  4. conductance


Correct Option: B
Explanation:

The process of converting alternating current (AC) into unidirectional current is known as rectification.

How many diodes are used in a full wave rectifier?

  1. 1

  2. 2

  3. 3

  4. 4


Correct Option: B
Explanation:

In a full wave rectifier, 2 diodes are used for rectification.

What is the name of process of increasing the strength of electrical signals?

  1. Rectification

  2. Amplification

  3. Inductance

  4. None of these


Correct Option: B
Explanation:

Amplification is the name of process of increasing the strength of electrical signals.

The electrical oscillations obtained from a microphone corresponding to the sound waves are called

  1. radio signals

  2. sound signals

  3. electric signals

  4. digital signals


Correct Option: B
Explanation:

The electrical oscillations obtained from a microphone corresponding to the sound waves are called sound signals.

What is the name of the device used for amplification?

  1. Rectifier

  2. Amplifier

  3. Diode

  4. LED


Correct Option: B
Explanation:

Amplifier is the device used for amplification.

Capacitors which use an electrolyte as a dielectric are known as

  1. paper capacitors

  2. electrolytic capacitors

  3. electric capacitors

  4. dielectric capacitors


Correct Option: B
Explanation:

Capacitors which use an electrolyte as a dielectric are known as electrolytic capacitors. 

Which of the following is known as “the brain of a computer”?

  1. Diodes

  2. Transistors

  3. Semiconductors

  4. Integrated circuits


Correct Option: D
Explanation:

Integrated circuits are known as the brain of a computer.

Which of the following is a semiconductor?

  1. Titanium

  2. Sodium

  3. Silicon

  4. Argon


Correct Option: C
Explanation:

Silicon is the only semiconductor in the above elements.

The ability to store charges is known as

  1. resistance

  2. inductance

  3. capacitance

  4. conductance


Correct Option: C
Explanation:

The ability to store charges is known as capacitance. The inductor stores energy in the form of magnetic fields and rest of the two options are dissipative elements which don't store energy. 

What is the unit of inductance?

  1. Farad

  2. Ohm

  3. Henry

  4. None of these


Correct Option: C
Explanation:

The unit of inductance is Henry.

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