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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 heavy stone hanging from a massless string of length 15 m is projected
- An electric bulb has a rated power of 50W at 100 V. if it used on an a.c. source
- The threshold wavelength for photoelectric emission from a material is 4800 Å.
- An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from
- If μᵥ=1.5230 and μʀ=15.145, then dispersive power of crown glass is
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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