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BJT & FET

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

FET is

a)

voltage control device

b)

current control device

2.

Output characteristics of FET is

a)

Id vs vgs

b)

Id vs Vds

c)

Ig vs Vgs

d)

Ig vs Id

3.

Ohmic region

a)

Id constant

b)

linearly increase

c)

stable

4.

Active region

a)

linearly increase

b)

between ohmic and saturate

c)

steady

d)

None of the above

5.

N channel FET is

a)

electron

b)

holes

6.

P channel FET is

a)

Arrow outward direction

b)

Arrow inward direction

7.

FET contains

a)

B, D, S

b)

G, D, E

c)

G,D, S

d)

None of the above

8.

N channel FET is

a)

major portion covers N

b)

major portion covers P

c)

both

9.

Number of PN junction and D.R layer is

a)

4

b)

2

c)

3

d)

1

10.

When power apply to Vds the D.R increase like

a)

brain

b)

lungs

c)

hand

d)

leg

11.

Conventional current of FET is

a)

e-

b)

e+

c)

Id

d)

Ig

12.

The reason of e-(electron) not flow from source to drain is

a)

deflection region Open

b)

deflection region closed

c)

None of the above

13.

Limitation of Class A is

a)

poor efficiency

b)

Large gain

14.

The connection of darlington pair is

a)

2 transistor base connected

b)

2 transistor collector joined

c)

2 transistor emitter joined

15.

BJT stands for

a)

bipolar junction traffic

b)

bipolar junction transducer

c)

bipolar junction transistor

d)

bipolar junction transformer

16.

Class B amplifier is

a)

Darlington pair

b)

pushpull amplifier

c)

Differential amplifer

d)

Class A amplfiier

17.

BJT Amplifier developed from

a)

CB

b)

CC

c)

CE

d)

CA

18.

CE means

a)

Emitter is common

b)

base is common

c)

both B & E common

d)

None of the above

19.

Darlington pair uses to

a)

Increase the power

b)

Increase efficiency

c)

Double the Gain

d)

None of the above

20.

Gain is

a)

output voltage to input voltage

b)

output current to input current

c)

output current to input voltage

d)

output voltage to input current

21.

Pushpull amplifier means

a)

None of the these

b)

Two transistor input is common

c)

Two transistor collector is joined

22.

Output of op-amp is

a)

G x Vd

b)

vd

c)

G

d)

none of the above

23.

Direct Coupled circuit

a)

Opamp 1 and 2 connected through R

b)

Opamp 1 and 2 connected through RC

c)

Opamp 1 and 2 connected through transformer

d)

None of the above

24.

RC coupled circuit

a)

Opamp 1 and 2 connected through RC

b)

OPamp 2 is connected C

25.

Transistor 1 emitter connected input to transistor 2 base is called

a)

Pushpull amplifier

b)

Darlington pair

c)

Differential amplifier

d)

None of the above

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