MCQs on Analog Electronics


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01․ Depletion region of a p-n junction is formed
During Reverse bias
During Forward bias
During Manufacturing
During Heating

During manufacturing process, the donor and acceptor atoms form the depletion region. It increases during reverse bias and decreases under forward bias.

02․ A 555 IC is used to produce
counter
register
clock
byte

A 555 IC known as Timer-IC is used to produce clock of desired frequency by setting the values of certain capacitors.

03․ Doping in a semiconductor increases which quantity
Resistance
Conductance
Inductance
None

Doping means adding impurity in semiconductor, which can be either from 3rd group or 5th group to form p type or n type respectively. It increases the conductivity of the semiconductor since it increases either holes or free electrons in the semiconductor.

04․ Donors to a semiconductor material is
Pentavalant
Trivalant
Divalant
Tetravalant

Pentavalant atoms are of group 5, having 5 electrons in their outermost shell. Four electrons form covalent bond and the rest electron act as a free electron. So they act as donors to the semiconductors.

05․ Example of donor atom is
Germinium
Silicon
Both A and B
Antimony

Group 5 elements are Donor type atoms. Antimony is a Group 5 element.

06․ Acceptors impurities are of ________ material
n-type
p-type
solid
Both A and B

Acceptors are from group 3 and they always act as p-type material because they have 3 electrons in their outermost shell. The deficiency of one electron acts as a hole.

07․ Base-10 system is also called as
Binary system
Tenth system
Decinary system
Decimal system

The number system has base 10 is called decimal number system. Decimal number system has 10 digits in it, from 0 to 9.

08․ Base of a number system is also known as
count
radix
shift
value

Base of any number system is called as radix.

09․ Binary Logic is mainly based on arithmetic operation and
addition operations
subtraction operations
both A and B
logical operations

Logical values are always handles with logical as well as arithmetic operations. Logical cases are like OR, AND, NOR, NOT etc.

10․ In a rectifier circuit, the diode converts
alternating voltage to direct voltage.
both (A) and (C) options are connect.
alternating voltage to direct current.
alternating current to direct voltage.

Diode converts alternating voltage to unidirectional current which is then converted in to voltage by load resistance connected across the output load terminal.

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