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A common emitter amplifier has a voltage gain of 50, an input impedance of 100Ω and an output impedance of 200Ω. The power gain of the amplifier is
Options
(a) 500
(b) 1000
(c) 1250
(d) 50
Correct Answer:
1250
Explanation:
Power gain = voltage gain x current gain
= Vₕ . Iₕ = V₀ / Vᵢ . I₀ / Iᵢ
= V₀² / Vᵢ² . Rᵢ / R₀ = 50 x 50 x 100/200
= 2500 / 2 = 1250
Related Questions: - A particle of mass m is projected with a velocity v making an angle of 45°
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Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A particle of mass m is projected with a velocity v making an angle of 45°
- An adiabatic process occurs at constant
- A magnetic force acting on a charged particle of charge -2µC in a magnetic field of 2T
- The displacement of an object attached to a spring and executing simple harmonic
- A body A experiences perfectly elastic collision with a stationary body B
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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