MCQ on Single Stage Transistor Amplifiers

MCQ on Single Stage Transistor Amplifiers with answers and explanations for placement tests and job interviews. These solved Single Stage Transistor Amplifiers MCQ are useful for the campus placement for all freshers including Engineering Students, MCA students, Computer and IT Engineers, etc.

Our Single Stage Transistor Amplifiers (Single Stage Transistor Amplifiersmultiple Choice Questions and Answers) focuses on the basic concept of Transistors. We will regularly update the quiz and most interesting thing is that questions come in a random sequence. So every time you will feel new questions.

We have already published a blog post that contains short questions related to embedded C. If you want you can also see this blog post. It would help you in your preparation. “Embedded C Interview Questions”.

So let’s see the set of MCQ on Single Stage Transistor Amplifiers (Multiple Choice Questions & Answers on “Single Stage Transistor Amplifiers”).

Guideline of Single Stage Transistor Amplifiers MCQ:

This MCQ on Single Stage Transistor Amplifiers is intended for checking your knowledge of Transistors. It takes 40 minutes to pass the MCQ on Single Stage Amplifiers. If you don’t finish the Amplifiers MCQ within the mentioned time, all the unanswered questions will count as wrong. You can miss the questions by clicking the “Next” button and return to the previous questions by the “Previous” button. Every unanswered question will count as wrong. MCQ on Single Stage Amplifiers has features of randomization which feel you a new question set at every attempt.

In this Single Stage Transistor Amplifiers Quiz, we have also implemented a feature that not allowed the user to see the next question or finish the quiz without attempting the current MCQ.

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Single Stage Transistor Amplifiers MCQ

Single Stage Transistor Amplifiers MCQ

1 / 39

An amplifier has a power gain of 100. Its db gain is ……………

10 db

20 db

40 db

None of the above

2 / 39

The slope of a.c. load line is ……………… that of d.c. load line

The same as

More than

Less than

None of the above

3 / 39

A transistor converts ……………

d.c. power into a.c. power

a.c. power into d.c. power

high resistance into low resistance

none of the above

4 / 39

In practice, the voltage gain of an amplifier is expressed ……………..

As volts

As a number

In db

None of the above

5 / 39

The phase difference between the output and input voltages of a CE amplifier is ………………..

180°

0°

90°

270°

6 / 39

The purpose of emitter capacitor (i.e. capacitor across RE) is to ……….

Avoid voltage gain drop

Forward bias the emitter

Reduce noise in the amplifier

None of the above

7 / 39

In a CE amplifier, the phase difference between voltage across collector load RC and signal voltage is ………..

180°

270°

90°

0°

8 / 39

In the d.c. equivalent circuit of a transistor amplifier, the capacitors are considered ……………..

Short

Open

Partially short

None of the above

9 / 39

The output power of a transistor amplifier is more than the input power because the additional power is supplied by …………

Transistor

Biasing circuit

Collector supply VCC

None of the above

10 / 39

It is generally desired that a transistor should have …………….. input impedance

Low

Very low

High

Very high

11 / 39

In order to get more voltage gain from a transistor amplifier, the transistor used should have …………..

Thin base

Thin collector

Wide emitter

None of the above

12 / 39

The purpose of d.c. conditions in a transistor is to …………..

Reverse bias the emitter

Forward bias the collector

Set up operating point

None of the above

13 / 39

When a transistor amplifier is operating, the current in any branch is ……………

Sum of a.c. and d.c.

c. only

difference of a.c. and d.c.

14 / 39

In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of ………..

RC + RL

RC || RL

15 / 39

The radio wave picked up by the receiving antenna is amplified about …….. times to have reasonable sound output

1000

A million

100

10000

16 / 39

For highest power gain, one would use …………….. configuration

none of the above

17 / 39

. In the zero signal conditions, a transistor sees ……………….. load

d.c.

a.c.

both d.c. and a.c.

none of the above

18 / 39

A single stage transistor amplifier with collector load RC and emitter resistance RE has a d.c. load of ……….

RC || RE

RC – RE

RC + RE

19 / 39

A single stage transistor amplifier contains ……………. and associated circuitry

Two transistors

One transistor

Three transistor

None of the above

20 / 39

When an a.c. signal is applied to an amplifier, ,the operating point moves along …………….

d.c. load line

a.c. load line

both d.c. and a.c. load lines

none of the above

21 / 39

If a transistor amplifier draws 2mA when input voltage is 10 V, then its input impedance is ………..

20 kΩ

2 kΩ

10 kΩ

5 kΩ

22 / 39

The ratio of output impedance of a CE amplifier is ……………

About 1

Low

High

Moderate

23 / 39

In a CE amplifier, voltage gain = ……………. x RAC/Rin

(1 + α)

(1+ β)

24 / 39

If the collector supply is 10V, then collector cut off voltage under d.c. conditions is ………….

20 V

5 V

2 V

10 V

25 / 39

If a transistor amplifier feeds a load of low resistance (e.g. speaker), then voltage gain will be ………….

High

Very high

Moderate

Low

26 / 39

A CE amplifier is also called ………….. circuit

Grounded emitter

Grounded base

Grounded collector

None of the above

27 / 39

The purpose of a coupling capacitor in a transistor amplifier is to ……….

Increase the output impedance of transistor

Protect the transistor

Pass a.c. and block d.c.

Provide biasing

28 / 39

The point of intersection of d.c. and a.c. load lines is called ……………..

Saturation point

Cut off point

Operating point

None of the above

29 / 39

CC configuration is used for impedance matching because its ……………..

Input impedance is very high

nput impedance is low

Output impedance is very low

None of the above

30 / 39

If the power and current gains of a transistor amplifier are 16500 and 100 respectively, then voltage gain is ………

165

165 x 104

100

None of the above

31 / 39

A single stage transistor amplifier with no load sees an a.c. load of ……..

RC + RE

RC || RE

RC/RE

32 / 39

The purpose of capacitors in a transistor amplifier is to ………………

Protect the transistor

Cool the transistor

Couple or bypass a.c. component

Provide biasing

33 / 39

The value of collector load RC in a transistor amplifier is ………… the output impedance of the transistor.

The same as

Less than

More than

None of the above

34 / 39

The d.c. load of a transistor amplifier is generally ………….. that of a a.c. load

The same as

Less than

More than

None of the above

35 / 39

If RC and RL represent the collector resistance and load resistance respectively in a single stage transistor amplifier, then a.c. load is ……..

RL + RC

RC || RL

RL – RC

36 / 39

The input capacitor in an amplifier is the ……………….. capacitor

Coupling

Bypass

Leakage

None of the above

37 / 39

In transistor amplifiers, we generally use ………….. capacitors.

Electrolytic

Mica

Paper

Air

38 / 39

In the a.c. equivalent circuit of a transistor amplifier, the capacitors are considered ………….

Short

Open

Partially open

None of the above

39 / 39

If the input capacitor of a transistor amplifier is short-circuited, then………

Transistor will be destroyed

Biasing conditions will change

Signal will not reach the base

None of the above

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