Transistor as an Amplifier
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
For a given transistor amplifier circuit in CE configuration and . Value of base current is

What is voltage amplification in transistor?

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

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

What is use a transistor as an amplifier?

In a transistor amplifier, the collector load resistance is and input resistance is . If the current gain is , calculate voltage gain of the amplifier.

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

Find the voltage amplification in a common emitter transistor amplifier if the current gain is , the output resistance is and the input resistance is .

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

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?

In the following common-emitter circuit, if negligible, , then is equal to,

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

If a NPN transistor is used as an amplifier then:

What is voltage amplification factor?

To use a transistor as an amplifier

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

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

To use a transistor as an amplifier

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

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 :
