Free Printable BE module4

1.

(a) is a semiconductor device used to amplify or switch electronic signals

2.

BJT has (a) number of terminals

3.

full form of BJT

a)

Bipolar Junction Transistor

b)

Bipolar Junction Transformer

c)

Bilateral Junction Transfer

d)

Bilateral Junction Transformer

4.

The image shows ....transistor

a)

NPN

b)

PNP

5.

In a BJT, thickest region is

a)

emitter

b)

collector

c)

base

6.

In a BJT, which region is heavily doped

a)

emitter

b)

base

c)

collector

7.

which region is lightly doped and thin?

a)

base

b)

emitter

c)

collector

8.

ΔIe/ΔIb=

a)

$\alpha$

b)

$\beta$

c)

$\gamma$

9.

ΔIc/ΔIb =

a)

$\alpha$

b)

$\beta$

c)

$\gamma$

10.

$which\ \ is\ \ true?\ \gamma\ =$

a)

$1+\beta$

b)

$1-\beta$

c)

$\frac{\beta}{1+\beta}$

11.

$which\ \ is\ \ true?\ \alpha=^{ }$

a)

$1+\beta$

b)

$\frac{\left(1+\beta\right)}{\beta}$

c)

$\frac{\beta}{1+\beta}$

12.

which is true? $\beta\ =$

a)

$\frac{\alpha}{1-\alpha}$

b)

$\frac{\alpha}{1+\alpha}$

c)

$\frac{\left(1-\alpha\right)}{\alpha}$

13.

point a is in .....region

a)

active

b)

cutoff

c)

saturation

14.

point b is in .....region

a)

active

b)

cutoff

c)

saturation

15.

point c is in .....region

a)

active

b)

cutoff

c)

saturation

16.

curve shown is ....................charcteristic of BJT

a)

transfer

b)

input

c)

output

17.

curve shown is ....................charcteristic of BJT

a)

transfer

b)

input

c)

output

18.

which region of BJT is used in amplifier?

a)

active

b)

cutoff

c)

saturation

19.

which regions of BJT is used in switch?

a)

active

b)

cutoff

c)

saturation

20.

which configuration has high input resistance?

a)

common collector

b)

common base

c)

common emitter

21.

which configuration is generally used for amplifier?

a)

CE

b)

CC

c)

CB

22.

configuration shown is...

a)

CE

b)

CB

c)

CC

23.

which configuration has highest output resistance?

a)

CB

b)

CC

c)

CE

24.

transistor has (a) number of pn junctions

25.

for a CE configuration, ratio of change in base emitter

voltage (Vbe) to the resulting change in base current (Ib) at

constant collector-emitter voltage (Vce) is called.....

a)

input resistance

b)

output resistance

c)

gain

BE module4

Total questions: 25

Worksheet time: 18mins

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