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Transistor as Amplifier

Total questions: 20

Worksheet time: 11mins

Name
Class
Date
1.

The input and output signals of a common emitter

amplifier are

a)

in phase

b)

90 degree out of phase

c)

180 degree out of phase

d)

270 degree out of phase

2.

If the transistor operates such that it is either in the saturation or cut-off region, it is operating as

a)

a filter

b)

a switch

c)

a signal amplifier

d)

an emitter follower

3.

Which one of the following amplifier circuits provides a phase inversion between the input and output signal?

a)

Common Base

b)

Common source

c)

Common collector

d)

Common emitter

4.

What are the names of the terminals X, Y and Z?

a)

X = Base, Y = Collector, Z = Emitter

b)

X = Emitter, Y = Base, Z = Collector

c)

X = Collector, Y = Base, Z = Emitter

d)

X = Collector, Y = Emitter, Z = Base

5.

One function of the transistor is to_____________?

a)

rectify

b)

amplify

c)

limit

d)

control

6.

What is the type of the transistor shown?

a)

PNP

b)

NPN

c)

BJT

7.

What is emitter current Ie of transistor that its Ic=100mA and Ib=100uA?

a)

100.1 mA

b)

1000mA

c)

100 mA

8.

Which statement about a transistor is correct?

a)

Has two electrodes

b)

Acts as a full wave rectifier

c)

Has its own internal energy supply

d)

Functions as an amplifier

9.

The purpose of biasing is to establish a ______

a)

amplification

b)

power source

c)

load line

d)

Q-point

10.

An electronic circuit having the capability to amplify power, voltage or current

a)

transformer

b)

attenuator

c)

amplifier

d)

transistor

11.

The output impedance of a BJT transistor amplifier is __________ in nature.

a)

resistive

b)

capacitive

c)

inductive

d)

wireless

12.

A transistor is essentially what?

a)

An output device

b)

An electronic switch

c)

A deivce that limits the flow of power

13.

In which region, the transistor operates.....?

a)

Saturation Region

b)

Cut-off Region

c)

Active Region

d)

None of the above

14.

A transistor is a …………… operated device

a)

Voltage

b)

Both Voltage and Current

c)

Current

d)

None of the Above

15.
Which of the following analysis is/are used in determining Q-point?
a)
Graphical Method
b)
Mathematical Method
c)
Graphical and Mathematical Method
d)
none of the above
16.
For the transistor to work as an amplifier, which of the should be the correct bias?
a)
B-E Forward Bias
C-B Reverse Bias
b)
B-E Reverse Bias
C-B Reverse Bias
c)
C-E Forward Bias
C-B Forward Bias
d)
B-E Reverse Bias
C-E Forward Bias
17.
Which ONE has the poorest bias stablisation without prevention of thermal runaway?
a)
Fixed Bias
b)
Emitter Feedback Bias
c)
Collector Feedback Bias
d)
Voltage Divider Bias
18.
Refer to the figure. It is a _______ bias.
a)
Fixed
b)
Emitter Feedback
c)
Collector Feedback
d)
Voltage Divider
19.
Refer to the figure. It is a _____ bias.
a)
Fixed
b)
Emitter Feedback
c)
Collector Feedback
d)
Voltage Divider
20.
BJT stands for
a)
Biomedical Junction Table
b)
Binary Justified Transistor
c)
Bipolar Junction Transistor
d)
Bipolar Junction Thyristor