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Transistors

Total questions: 24

Worksheet time: 13mins

Name
Class
Date
1.

A transistor has

a)

1 junction

b)

2 junctions

c)

3 junctions

d)

none

2.

The number of depletion layers in a transistor is

a)

1

b)

3

c)

2

d)

4

3.

Identify the component

a)

FET

b)

Triode

c)

Transistor

d)

Traic

4.

The element that has the biggest size in a transistor is

a)

base

b)

emitter

c)

collector

d)

none

5.

A transistor is a …………… operated device

a)

current

b)

voltage

c)

both current and voltage

d)

none

6.

n a transistor, the base current is about ………….. of emitter current

a)

25%

b)

35%

c)

95%

d)

5%

7.

At the base-emitter junctions of a transistor, one finds

a)

a reverse bias

b)

a wide depletion layer

c)

low resistance

d)

none of the above

8.

Most of the majority carriers from the emitter

a)

recombine in the base

b)

recombine in the emitter

c)

pass through the base region to the collector

d)

none of the above

9.

In a transistor

a)

IC = IE + IB

b)

IE= IB+IC

c)

IB=IE+IC

d)

IE=IC-IB

10.

The most commonly used transistor arrangement is …………… arrangement

a)

common emitter

b)

common base

c)

common collector

d)

none

11.

The generalized formula for the input impedance of any circuit is

a)

ZIN = VIN/IIN

b)

V=IR

c)

IN=R

d)

All of the above

12.

Which of the among are the types of transistors?

a)

Bipolar Junction Transistors (BJT)

b)

Field Effect Transistors (FET)

c)

Both A and B

d)

None of the above

13.

The emitter-base junction of a transistor is ___ Biased while the collector-base junction is

a)

Reverse, Forward

b)

Reverse, Reverse

c)

Forward, forward

d)

Forward, reverse

14.

The power gain is highest in Common emitter.

a)

True

b)

false

15.

identify the image

a)

npn

b)

pnp

c)

n type

d)

p type

16.

In a transistor, signal is transferred from a ___________ circuit.

a)

high resistance to low resistance

b)

low resistance to high resistance

c)

high resistance to high resistance

d)

low resistance to low resistance

17.

The name transistor is derived from ___ that means the resistance is changed.

a)

ten resistor”

b)

“transfer run”

c)

“transfer resistor”

d)

None of the above

18.

In a pnp transistor, the current carriers are

a)

holes

b)

donor ions

c)

acceptor ions

d)

free electrons

19.

n Zener diode, the Zener breakdown takes place

a)

Below 6 V

b)

At 6 V

c)

Above 6 V

d)

None of the above

20.

what is the Zener current for the given regulator circuit

a)

10 mA

b)

20 mA

c)

15mA

d)

5 mA

21.

Depletion region behaves as

a)

Semiconductor

b)

insulator

c)

conductor

d)

High resistance

22.

Depletion region contains

a)

Free holes

b)

Free electrons

c)

Immobile charge carriers

d)

All of the above

23.

Which is true

a)

IE=  α\alpha  IB+Ico

b)

IC=  α\alpha  IB+Ico

c)

IB=  α\alpha  IE+Ico

d)

IC=  α\alpha  IE+Ico

24.

 α\alpha  is

a)

voltage amplification factor

b)

current amplification factor

c)

electron amplification factor

d)

hole amplification factor

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