MCQs on Analog Electronics

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01․ The common-mode voltage gain is
smaller than the voltage gain.
equal to the voltage gain.
greater than the voltage gain.
none of the above.

Under construction.
02․ The input stage of an op amp is usually a
differential amp.
class B push-pull amplifier.
CE amplifier.
swamped amplifier.

Under construction.
03․ The common - mode rejection ratio is
very low.
as high as possible.
equal to the voltage gain.
equal to the common-mode voltage gain.

Under construction.
04․ A 741 C has
a voltage gain of 100,000.
an input impedance of 2 MΩ.
an output impedance of 75 Ω.
all of the above.

Under construction.
05․ The voltage follower has a
closed - loop voltage gain of unity.
small open - loop voltage gain.
closed - loop bandwidth of zero.
large closed - loop output impedance.

Under construction.
06․ An opamp has a voltage gain of 200,000. If the output voltage is 1 V, the input voltage is
2 micro V.
5 5 micro V.
10 V.
1 V.

Under construction.
07․ The 741 C has a unity - gain frequency of
10 Hz.
20 Hz.
1 MHz.
15 MHz.

Under construction.
08․ The typical input stage of an opamp has a
single - ended input and single-ended output.
single - ended input and differential output.
differential input and single - ended output.
differential input and differential output.

Under construction.
09․ The input offset electric current is usually
less than the input bias current.
equal to zero.
less than the input offset voltage.
unimportant when a base resistor is used.

Under construction.
10․ With both bases grounded, the only offset that produces an error is the
input offset current.
input bias current.
input offset voltage.
β.

Under construction.
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