Q. The effective channel length of a MOSFET in a saturation decreases with increase in
β
Correct Answer: (B)
drain voltage
Analog Electronics MCQs | Page - 1
Dear candidates you will find MCQ questions of Analog Electronics here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. A differential amplifier is invariably used in the i/p stage of all OP-AMPs.This is dome basically to provide the OP-AMPs with a very high
β
Correct Answer: (A)
CMRR
Q. A change in the value of the emitter resistance Re in a differential amplifier
β
Correct Answer: (B)
affects the common mode gain Ac
Q. An OPAMP has a slew rate of 5 V/ΞΌ S .The largest sine wave O/P voltage possible at a frequency of 1MHZ is
β
Correct Answer: (D)
5/2 volts
Q. The approximate input impedance of the OPAMP circuit which has Ri=10k, Rf=100k, RL=10k
β
Correct Answer: (D)
10k
Q. A differential amplifier has a differential gain of 20,000. CMRR=80 dB. The common mode gain is given by
β
Correct Answer: (A)
2
Q. A source follower using an FET usually has a voltage gain which is
β
Correct Answer: (A)
greater than +100
Q. Thermal runaway is not possible in FET because as the temperature of FET increases
β
Correct Answer: (A)
the mobility decreases
Q. The early effect in a bipolar junction transistor is caused by
β
Correct Answer: (C)
large collector-base reverse bias
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