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The input signal given to a CE amplifier having a voltage gain of 150 is Vi=2 cos (15t+π/3). The corresponding output signal will be
Options
(a) 75 cos(15t+2π/3)
(b) 2 cos(15t+5π/6)
(c) 300 cos(15t+4π/3)
(d) 300 cos(15t+π/3)
Correct Answer:
300 cos(15t+4π/3)
Explanation:
Voltage gain Av= 150
Vi = 2 cos (15t+π/3); V₀=?
For CE transistor phase difference between input and output signal is π=180⁰.
Using formula, Av=V₀/Vi
⇒V₀=Av x Vi
=150 x 2 cos (15t+π/3)
V₀=300 cos (15t + π/3 + π)
V₀=300 cos (15t + (4/3) π)
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Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In the given figure, a diode D is connected to an external resistance R=100 Ω
- The amount of heat energy required to raise the temperature of 1 g of Helium
- Two masses of 9 g and 6 g are connected with a string which is passing over a frictionless
- A cricket ball of mass 250 g collides with a bat with velocity 10 m/s
- Three masses are placed on the x-axis : 300 g at origin, 500 g at x = 40 cm
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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