First slide

Transistor

Question

The input signal given to a CE amplifier having a voltage gain of 150 is $V_{i} = 2 \cos (15 t + \frac{π}{3})$ . The corresponding output signal will be

Moderate

A

$2 \cos (15 t + \frac{5 π}{6})$
B

$300 \cos (15 t + \frac{4 π}{3})$
C

$300 \cos (15 t + \frac{π}{3})$
D

$75 \cos (15 t + \frac{2 π}{3})$

Solution

Here,
$Input signal, V_{i} = 2 \cos (15 t + \frac{π}{3})$
$and voltage gain, A_{v} = 150$
$As A_{v} = \frac{V_{o}}{V_{i}}$
$∴ Output signal, V_{o} = A_{v} V_{i}$
$Since CE amplifier gives a phase difference of$
$π (= 180 °) between input and output signals,$
$∴ V_{o} = 150 [2 \cos (15 t + \frac{π}{3} + π)]$
$= 300 \cos (15 t + \frac{4 π}{3})$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App