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Basic Electronics Quiz

Total questions: 25

Worksheet time: 14mins

Name
Class
Date
1.

Semiconductors is formed by _________ Bonds

a)

Electrovalent

b)

Co ordinate

c)

Covalent

d)

None of the above

2.

A semiconductor has ________ temperature coefficient of resistance

a)

Positive

b)

Negative

c)

Zero

d)

None of the Above

3.

Most Commonly used semiconductor material is (a)  

4.

A Semiconductor has generally ______ valence electrons

a)

4

b)

6

c)

3

d)

2

5.

Semiconductor in its pure form called __________________semiconductor

a)

Extrinsic

b)

N type

c)

P type

d)

Intrinsic

6.

Example for Trivalent atoms________

a)

Phosphorous

b)

Arsenic

c)

Boron

d)

Antimony

7.

Example for Pentavalent atoms

a)

Boron

b)

Aluminium

c)

Indium

d)

Phosphorous

8.

The number of electrons present in outer most orbit is called (a)   electrons

9.

An n type semiconductor is ________

a)

positive charged

b)

Negative charged

c)

Electrically Neutral

d)

None of the above

10.

Barrier potential of Germanium diode is (a)   v

11.

the Cut-in voltage of Ideal diode is _______ Volts

a)

0.1

b)

0.2

c)

0.3

d)

0

12.

Reverse saturation of leakage current of Diode wil be in the order of ________ A

a)

milli

b)

micro

c)

Kilo

13.

In a BJT, which region is heavilty doped ___________

a)

Base

b)

Emitter

c)

Collector

d)

All

14.

For using BJT as Amplifier, BJT must be operated in ______ region

a)

Saturation

b)

Cutoff

c)

Active

d)

Any region

15.

Diode is ________ directional device

a)

Uni

b)

Bi

c)

None

16.

BJT can be considered as _________ diodes connected back to back

a)

two

b)

three

c)

four

17.

in BJT, relation between Ib, Ic, Ie is _________

a)

Ie = Ic x Ib

b)

Ie = Ic + Ib

c)

Ic = Ie + Ib

d)

Ib = Ie + Ic

18.

Approximate value of α is ________

a)

0

b)

> 1

c)

100

d)

0.98 or less than 1

19.

In active region

a)

EB junction is Reverse Bias, CB junction Forward Bias

b)

Both the junction Forward Biased

c)

Both the junction Riverse Biased

d)

EB junction is Forward Bias, CB junction is Reverse Bias

20.

Most used BJT configuraion is

a)

Common Base

b)

Common Collector

c)

Common Emitter

21.

β of transistor is ratio of

a)

IB/IC

b)

IE/IC

c)

IC/IB

d)

IC/IE

22.

Relation between Alpha and Beta is

a)

Alpha = 1 + Beta

b)

Beta = Alpha -1

c)

Beta = alpha / [1 - alpha ]

d)

Alpha = Beta / [1 - Beta ]

23.

typical value of β is

a)

0

b)

1

c)

20 to 200

d)

< 0

24.

Zener diode is connected in _________ Bias to use as voltage regulator

a)

Forward

b)

Reverse

c)

un

25.

Breakdown due to Ionization of particle is _________

a)

Zener Breakdown

b)

Avalanche Breakdown

c)

none of the above