Operational Amplifiers mcqs
1. Op-Amp is abbreviation for ________.
Operational Amplifier
Operand amplitude
Operational amplitude
None of the above
2. Op-Amp is a ______ type of amplifier.
Current
Voltage
Power
Resistance
3. Op-Amp has ________ inputs.
Single
Similar
Zero
Differential
4. Op-Amp has ________ outputs.
Single
Similar
Multiple
Differential
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5. Which of the following are the internal components of an op-amp?
FET
Transistors
Resistors
All the above
6. Op-Amp has ______ input type configuration.
2
3
4
5
7. Op-Amp with positive input type configuration is represented as _______.
+V
-V
V
Both +V and V
8. An ideal Op-amp has _______ input voltage.
1V
3V
Grounded
Infinite
9. An ideal Op-amp has _______ output voltage.
1V
3V
Grounded
Infinite
10. Real-time Op-amps are ________ potentials.
AC
DC
Zero
Infinite
11. CMRR parameter stands for ________.
Common mode rejection ratio
Common medium rejection ratio
Common mode ratio of reference
None of the above
12. A feedback free instrumentation type amplifier has _____ input impedance.
High
Low
zero
Medium
13. Ideal Op-amp has _______ open loop gain.
zero
Infinite
Negative
Positive
14. Ideal Op-amp has ________ input impedance.
zero
Infinite
Negative
Positive
15. Trans resistance gain in op-amp is the ratio of _________.
Vin/Iout
Vout/Vin
Iin/Vout
Iout/ Iin
16. Ideal Op-amp has ________ input current.
zero
Infinite
Negative
Positive
17. Ideal Op-amp has ________ bandwidth.
0
Infinite
Negative
Positive
18. 741 Op-amp has _________ number of gain stages.
2
3
4
5
19. Which of the following are the 3 gain stages in Op-Amp?
Differential amplifier
Voltage amplifier
Output amplifier
All the above
20. Op-Amps open loop gain ________ when frequency increases.
Increases
Decreases
Falls rapidly
Become zero
21. A real Op-amp has ________ output impedance.
High
Low
zero
Infinity
22. Which factor determine the output voltage of an op-amp?
Positive saturation
Negative saturation
Both positive and negative saturation voltage
Supply voltage
23. Which of the following are the applications of an op-amp?
Voltage followers
Selective inversion circuit
Current to voltage converter
All the above
24. Op-Amp 741 IC has _________ number of pins.
7
8
5
6
25. Open loop op-amp configuration has ….
Direct network between output and input terminals
No connection between output and feedback network
No connection between input and feedback network
All of the mentioned
26. In which configuration does the op-amp function as a high gain amplifier?
Differential amplifier
Inverting amplifier
Non-inverting amplifier
All of the mentioned
27. OP-Amp 741 IC third pin specifies ________.
Offset null
-V
+V
-Vcc
28. A current gain in op-amp is the ratio of _______.
Vin/Vout
Vout/Vin
Iin/Iout
Iout/ Iin
29. Transconductance gain in op-amp is the ratio of ________.
Vin/Iout
Vout/Vin
Iin/Iout
Iout/ Iin
30. Generally, an op-amp is a _________ stage amplifier.
Single
Double
Multi
Zero
31. Op-Amp is available in the form of ________ package.
IC
Kit
Device
All the above
32. The voltage output of an ideal op-amp is _________.
Vout= AOL(V1-V2)
Vout= (V1-V2)
Vout= AOL
Vout= AOL(V1)
33. Op-Amp differential input is represented as ________.
V1+V2
V1 – V2
I1+I2
I-V
34. Op-Amp with positive feedback acts as ________.
Oscillator
Amplifier
Rectifier
Clipper
35. Op-Amp with negative feedback acts as ________.
Oscillator
Amplifier
Rectifier
Clipper
36. Which of the following electrical characteristics is not exhibited by an ideal op-amp?
Infinite voltage gain
Infinite bandwidth
Infinite output resistance
Infinite slew rate
37. How will be the output voltage obtained for an ideal op-amp?
Amplifies the difference between the two input voltages
Amplifies individual voltages input voltages
Amplifies products of two input voltage
None of the mentioned
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