A$\mathrm{P}–\mathrm{N}–\mathrm{P}$ Transistor is used in common emitter mode in an amplifier circuit. A change of $40\mu \mathrm{A}$ in the base current brings change of $2\mathrm{mA}$ in collector current and $0.04\mathrm{V}$ in base emitter voltage. Find voltage gain of the amplifier, if $6 K\Omega$ of load is used -

If $\alpha =0.99$ for a CE transistor amplifier circuit. The input resistance is equal to $1 \mathrm{k\Omega }$ and the load resistance is equal to$100 \mathrm{k\Omega }$  to , the voltage gain of the circuit is 

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Draw a labelled diagram of a common emitter amplifier, showing waveforms of signal voltage and output voltage.

The typical output characteristics curve for a transistor working in the common-emitter configuration is shown in the figure.

The estimated current gain from the figure is

What are the advantages of negative feedback amplifier?

Draw a labelled circuit diagram of a transistor acting as a common emitter amplifier. What is meant by phase reversal?

In the circuit shown, the value of $\beta$ of the transistor is $48$. If the supplied base current is $200 \mathrm{\mu A}$, what is the voltage at the terminal $Y$?

In a common emitter amplifier, the input resistance and output resistance are $200\mathrm{\Omega }$ and $500\mathrm{\Omega }$ respectively. If the voltage gain of the amplifier is $50$, then the power gain is