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A common emitter amplifier is designed with n-p-n transistor (α=0.99). The input impedence is 1kΩ and load is 10kΩ. The voltage gain will be
Options
(a) 9900
(b) 99
(c) 9.9
(d) 990
Correct Answer:
990
Explanation:
Voltage gain = β × Resistance gain
β = α/(1-α) = 0.99 / (1-0.99) = 99
Resistance gain = (10 × 10³) = 10
Voltage gain = 99 × 10 = 990
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Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Three objects A,B and C are kept in a straight line on a frictionless horizontal surface
- The operation of a nuclear reactor is said to be critical, if the multiplication
- A point performs simple harmonic oscillation of period T and the equation of motion
- The electirc field in a certain region is acting radially outward and is given by E=Ar.
- The ratio of speed of an electron in ground state in Bohr’s first orbit of hydrogen atom
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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