Q135 / 180 · NEET 2015 (Phase 2) · Physics

The input signal is 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:

A
$75 \cos (15 t + \frac{2 π}{3})$
B
$2 \cos (15 t + \frac{5 π}{6})$
Correct answer
C
$300 \cos (15 t + \frac{4 π}{3})$
D
$300 \cos (15 t + \frac{π}{3})$

Solution

CE amplifier causes phase difference of

π (= 180^{o}) s o V_{o u t} = 300 \cos (15 t + \frac{π}{3} + π)

Hence, the correct answer is option: 'C'.

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