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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
- A force of 10N is applied on a body for 3 sec and the corresponding displacement 6 m.
- Kirchoff’s I law and II laws of electricity prove respectively the
- If emf induced in a coil is 2 V by changing the current in it from 8 A to 6 A
- If a magnet is suspended at an angle 30⁰ to the magnetic meridian, the dip needle
- Which gate can be obtained by shorting both the input terminals of a NOR gate?
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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