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  • In a common emitter amplifier, the resistance of the output circuit is 500 times the resistance of the input circuit. If <img alt="a=0.98" src="https://entrancecorner.oncodecogs.com/gif.late

In a common emitter amplifier, the resistance of the output circuit is 500 times the resistance of the input circuit.
If a=0.98, then find the voltage gain and the power gain:

Option: 1

23500,1300500


Option: 2

24500,1200500


Option: 3

22505,1300500


Option: 4

23500,1200500


Answers (1)

best_answer

\mathrm{Given\; \alpha=0.98\; and \frac{\mathrm{R}_{\text {out }}}{\mathrm{R}_{\text {in }}}=500}

\mathrm{\beta=\frac{\alpha}{1-\alpha}=\frac{0.98}{1-0.98}=49 }

\mathrm{\text { Voltage gain }=(\beta)\left(\frac{\mathrm{R}_{\text {out }}}{\mathrm{R}_{\text {in }}}\right)=(49)(500)=24500 }

\mathrm{\text { Power gain }=\left(\beta^2\right)\left(\frac{R_{\text {out }}}{R_{\text {in }}}\right)=(49)^2(500)=1200500 }

 

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SANGALDEEP SINGH

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