Transistor as an Amplifier

IMPORTANT

Transistor as an Amplifier: Overview

This topic covers concepts such as transistor as an amplifier, common emitter amplifier, and voltage amplification factor.

Important Questions on Transistor as an Amplifier

EASY
IMPORTANT

For a given transistor amplifier circuit in CE configuration VCC=1 V,RC=1 ,Rb=100  and β=100. Value of base current Ibis

Question Image

EASY
IMPORTANT

What is voltage amplification in transistor?

MEDIUM
IMPORTANT

The output impedance of a transistor connected in the...............arrangement is the highest

MEDIUM
IMPORTANT

In a CE amplifier, the input ac signal to be amplified is applied across.

MEDIUM
IMPORTANT

What is use a transistor as an amplifier?

MEDIUM
IMPORTANT

In a transistor amplifier, the collector load resistance RL is 2  and input resistance Ri is 1  . If the current gain is 50, calculate voltage gain of the amplifier.

MEDIUM
IMPORTANT

In a common base mode of a transistor, the collector current is 5.488 mA for an emitter current of 5.60 mA. The value of the base current amplification factor β will be

HARD
IMPORTANT

Find the voltage amplification in a common emitter transistor amplifier if the current gain is 40, the output resistance is 2000 Ω and the input resistance is 700 Ω

EASY
IMPORTANT

If the base and collector of a transistor are in forward biased, it is not used as a :-

EASY
IMPORTANT

What is the phase relationship between the AC input and output voltages in a common emitter amplifier? What is the reason for the phase reversal?

 

EASY
IMPORTANT

In the following common-emitter circuit, if β=100, VCE=7 V, VBE=negligible, RC=2 , then IB is equal to,

Question Image

EASY
IMPORTANT

Draw a neat circuit diagram for transistor as C-E amplifier and explain its working.

MEDIUM
IMPORTANT

If a NPN transistor is used as an amplifier then:

EASY
IMPORTANT

What is voltage amplification factor?

HARD
IMPORTANT

To use a transistor as an amplifier

EASY
IMPORTANT

In a common emitter amplifier, the input AC signal to be amplified is applied across

MEDIUM
IMPORTANT

Which among the following statements is correct regarding the dependence of voltage gain of an amplifier on the frequency of the signal?

HARD
IMPORTANT

To use a transistor as an amplifier

MEDIUM
IMPORTANT

In a triode valve, the plate resistance is 10000 Ω and the anode load resistance is 30000 Ω. If the amplification factor is 36, then the voltage gain is

EASY
IMPORTANT

In a triode amplifier the load resistance is equal to the plate resistance rp​. If μ is the amplification factor, the stage gain of the amplifier is :