A differential amplifier has a differential gain of 20,000 . CMRR=80 dB. The common mode gain is given by________?
Correct answer: A. 2
- A. 2
- B. 1
- C. 1/2
- D. 0
Explanation
CMRR = Ad/Ac, and 80 dB means a gain ratio of 10^(80/20) = 10,000. Therefore, Ac = 20,000/10,000 = 2.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Electronics and Devices
758 free Electronics and Devices MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electronics and Devices questions
. If =0.98 ,Ico=6µA and Iβ=100µA for a transistor,then the value of Ic will be______?
The cascade amplifier is a multistage configuration of__________?
The encapsulation of transistor is necessary for__________?
MOSFET can be used as a__________?
Which of the following amplifier circuit using junction transistor has the best gain?
The horizontal intercept of dc load line is the same as ideal____________?