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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
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Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Given A=4i+6j and B=2i+3j. Which of the following is correct?
- A plane wave of wavelength 6250Å is incident normally on a slit of width 2×10⁻² cm.
- What is the energy of He⁺ electron in first orbit?
- If vectors A=cos wti + sin wtj and B= cos wt/2 i + sin wt/2 j are functions of time,
- A thin ring of radius R meter has charge q coulomb uniformly spread on it
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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