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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
- A round disc of moment of inertia i₂ about its axis perpendicular to its plane
- A particle of mass 1mg has the same wavelength as an electron moving with a velocity
- The body of mass m hangs at one end of a string of length l, the other end of which
- A,B and C are voltmeters of resistance R, 1.5 R and 3R respectively, as shown
- If v is the speed of sound in air, then the shortest length of the closed pipe
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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