Objective Questions on Basic Electronics- Semiconductor, Integrated Circuits, Logic Gates

Objective Questions ELECTRONICS

The study of nature, control, and application of electrons

Ans: Electronics

Vacuum tubes work on the principle of

Ans : Thermionic emission

The simplest form of a vacuum tube

Ans : Diode

The device used to convert alternating current (AC) to Direct Current (DC)

Ans : Rectifiers

The device which converts DC energy into AC energy

Ans : Electronic oscillator

The process which makes the current to pass in the same direction is called

Ans : Rectification

Now thermionic valves are completely replaced by

Ans : Transistors

Miracle child of electronics

Ans : Transistor

Triode was invented by

Ans : Lee De Forest

Element used in solar cells

Ans : Silicon

SEMI CONDUCTORS

Materials whose conductivity lies between conductors and insulators

Ans : Semi conductors

Examples of semiconductors are

Ans : Germanium, Silicon

Semi conductor in pure state is called

Ans : Intrinsic Semiconductors

In intrinsic, number of holes is equal to number of

Ans : Electrons

The process to improve conductivity

Ans : Doping

Process of adding controlled impurities to a pure semiconductor is known as

Ans : Doping

The substances used for doping

Ans : Dopants

An intrinsic semiconductor undergoes doping, change into

Ans : Extrinsic semiconductor

Extrinsic are of two types:

(1)N-type semiconductor

(2)P-type semiconductor

In N-type, charge carriers are

Ans : Electrons

An intrinsic semiconductors have

Trivalent impurity (eg: Boron, Gallium)

Pentavalent impurity (eg: Antimony, Arsenic)

SEMI CONDUCTORS ARE USED MAINLY IN

Solar cells (silicon) transistors

diodes Integrated circuits (IC)

DIODE

The electronic device which has semiconducting property that allows current to flow in one direction

Ans : Diode

Diode is mostly used to convert

Ans : AC to DC

Diode is used as a

Ans : Rectifier

Zener diode is used as

Ans : Voltage regulator

TRANSISTOR

A semiconductor device used to amplify or switch electronic signals and electrical power

Ans : Transistor

Transistor is operated at low temperatures and voltages.

Three regions of a transistor

Ans : Emitter, Base, Collector

Transistor transfers a signal from a low resistance to

Ans : High resistance

Transistor was invented by

Ans : John Bardeen, W.H. Brattain and William Shockley

Electronic intelligene is called

Ans : ELINT

INTEGRATED CIRCUITS (IC)

The circuits that act as transistors, diodes, resistors etc is called

Ans : Integrated Circuits

'IC' chips are made up of

Ans : Silicon or Germanium

IC was invented by

Ans : Jack Kilby

IC chip using Silicon was invented by

Ans : Robert Noyce

GATES

The electronic circuit which works only on two voltage levels (0 and 1) is called

Ans : Gates

LOGIC GATES ARE

1. AND Gate

2. OR Gate

3. NOT gate

Universal logics are - NAND, NOR

Voltage levels In a circuit is either represented by

Ans : '1' or '0'

The level '1' represents

Ans : High voltage level

The level '0' represents

Ans : Zero voltage level

You can Watch free video Lessons Here

You Can Join Telegram Here.

EEE Made Easy Telegram

Notebook

Objective Questions on Basic Electronics- Semiconductor, Integrated Circuits, Logic Gates