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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
- If the focal length of a concave mirror is 50 cm, then where should the object
- Consider two particles of different masses. In which of the following situations
- When photons of energy hν are incident on the surface of photosensitive
- A galvanometer acting as a voltmeter will have
- A coin placed on a rotating turn table just slips,if it is placed at a distance
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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