Operational Amplifier : OP-AMP MCQ’s Part 2
11. The voltage gain of
IC 741 is about
a. 10,000
b. 100,000
c. 20,000
d. 200,000
12. The frequency range
of amplifier signals for IC 741 op-amp is from
a. 0-500KHz
b. 0-1MHz
c. 0-5MHz
d. 0-500MHz
13. The max supply voltage
of LM741 is
a. ±18
b. ±20
c. ±15
d. ±22
14. LM741 op-amp have
_____ legs.
a. 8
b. 10
c. 12
d. 6
15. In differential mode_____.
a. opposite polarity
signals are applied to the inputs
b. the gain is one
c. the outputs are of
different amplitudes
d. only one supply
voltage is used
16. The common mode gain refers,
when both input have___
a. same input
b. different input
c. both a&b
d. none
17. The common mode gain
is low due to_______________.
18 . Input resistance of
op-amp is
a. very low
b. very high
c. infinity
d. about 10 K-ohm
19. Gain of non-inverting amplifier is given by G =___ Where R1=feedback resistor & R2=input resistor.
a. 1 + R1/R2
b. 1 - R1/R2
c. (1+ R1)/R2
d. (R1 + R2)/R2
20. Open loop
gain of an amplifier can be represented by formula___ where Vo=output voltage
& Vi=input voltage
a. Vo/Vi
b. Vo +
Vi
c. Vo -
Vi
d. Vo ×
Vi
Answer
11. d
12. b
13. d
14. a
15. a
16. a
17.the difference between two input is very low
18. a
19. c
20. a
