The input signal given to a CE amplifier having a voltage gain of 150 is V i = 2 cos [ 15 t + π 3 ] Vi=2cos15t+π3. The corresponding output signal will be:

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 Question:  From NCERT  | NEET 2015   || [Difficult level:Hard] Subtopic:  TRANSISTOR AS AN AMPLIFIER (CE-CONFIGURATION)|| 

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The input signal given to a CE amplifier having a voltage gain of 150 is $V_i=2\cos \left[15t+\frac{\pi }{3}\right]$. The corresponding output signal will be:

1. $30\cos \left[15t+\frac{\pi }{3}\right]$

2. $75\cos \left[15t+\frac{2\pi }{3}\right]$

3. $2\cos \left[15t+\frac{5\pi }{3}\right]$

4. $300\cos \left[15t+\frac{4\pi }{3}\right]$

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 Answer ▽ ✅Verified 

4. $300\cos \left[15t+\frac{4\pi }{3}\right]$

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Snapshot:   

The voltage gain of the amplifier is

 (14.18)

The negative sign represents that output voltage is opposite with phase with the input voltage. 

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