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NEET 2015
Exam
NEET
Year
2015
Subject
Physics
Chapter
Semiconductors

NEET 2015 · Physics · Semiconductors

The input signal is given to a CE amplifier having a voltage gain...

The input signal is given to a CE amplifier having a voltage gain of 150150 is Vi=2cos⁡(15t+π3){V}_{i} = 2\cos \left(15t + \dfrac{\pi}{3}\right). The corresponding output signal will be:

Options

  1. A75cos⁡(15t+2π3)75\cos \left(15t + \dfrac{2\pi}{3}\right)
  2. B2cos⁡(15t+5π6)2\cos \left(15t + \dfrac{5\pi}{6}\right)
  3. C300cos⁡(15t+4π3)300\cos \left(15t + \dfrac{4\pi}{3}\right)
  4. D300cos⁡(15t+π3)300\cos \left(15t + \dfrac{\pi}{3}\right)

Correct answer

C. 300cos⁡(15t+4π3)300\cos \left(15t + \dfrac{4\pi}{3}\right)

Step-by-step solution

CE amplifier causes phase difference of \pi\left(= {180}^{o}\right)so{V}_{out} = 300\cos \left(15t + \dfrac{\pi}{3} + \pi\right)
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