The input signal given to C.E. amplifier having a voltage gain of 126 is Vi = 2cos (12t + π/3). The corresponding output signal will be (a) 252cos (12t + 4π/3) (b) 252cos (12t + π/3) (c) 63cos (12t + 2π/3) (d) 2cos (12t + 5π/3)

Answer: (a). CE amplifier: amplitude multiplied by AV and phase shifted by π. Amplitude = 126 × 2 = 252 Phase = π/3 + π = 4π/3 So the answer is (a) 252cos (12t + 4π/3).

The input signal given to C.E. amplifier having a voltage gain of 126… | MHT CET 2024 (16 May, Shift 1)

Q35MHT CET 2024 · 16 MAY · SHIFT 1Easy

Junction Transistor

The input signal given to C.E. amplifier having a voltage gain of 126 is $V_i = 2\cos\left(12t + \frac{\pi}{3}\right)$ . The corresponding output signal will be

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Answer: (a)

CE amplifier: amplitude multiplied by $A_V$ and phase shifted by $\pi$ .
Amplitude $= 126 \times 2 = 252$
Phase $= \frac{\pi}{3} + \pi = \frac{4\pi}{3}$
So the answer is (a) $252\cos\left(12t + \frac{4\pi}{3}\right)$ .

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