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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
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Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Temperature is a measurement of coldness or hotness of an object.
- The position x of a particle with respect to time t along x-axis is given
- A coin of mass m and radius r having moment of inertia I about the axis passes
- The potential energy of a weightless spring compressed by a distance D is proportional
- A long wire carrying a steady current is bent into a circular loop of one turn.
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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