Analog Electronics MCQ

Q1. What is analog electronics?

Correct Answer: B

Analog electronics deals with continuous-time signals.

Q2. Which of the following is an analog signal?

Correct Answer: C

Sine wave is a continuous analog signal.

Q3. What is amplifier used for?

Correct Answer: B

Amplifiers increase the strength of weak signals.

Q4. What is the function of rectifier?

Correct Answer: B

Rectifier converts AC into DC.

Q5. Which device is used to smooth DC output?

Correct Answer: B

Capacitor filters ripple from DC output.

Q6. What is diode?

Correct Answer: A

Diode allows current in one direction only.

Q7. What is transistor?

Correct Answer: B

Transistor is used for switching and amplification.

Q8. Which transistor terminals are called?

Correct Answer: B

BJT has emitter, base, and collector.

Q9. What is the function of capacitor?

Correct Answer: B

Capacitor stores electrical energy.

Q10. What is inductor?

Correct Answer: B

Inductor stores energy in magnetic field.

Q11. What is RC circuit?

Correct Answer: A

RC circuit contains resistor and capacitor.

Q12. What is time constant in RC circuit?

Correct Answer: B

Time constant is R multiplied by C.

Q13. What is oscillator?

Correct Answer: B

Oscillator generates periodic waveforms.

Q14. Which oscillator generates sine wave?

Correct Answer: A

RC oscillators generate sine waves.

Q15. What is feedback in amplifier?

Correct Answer: A

Feedback improves stability and gain.

Q16. What is negative feedback?

Correct Answer: B

Negative feedback stabilizes amplifier.

Q17. What is positive feedback?

Correct Answer: B

Positive feedback increases output signal.

Q18. What is clipping in electronics?

Correct Answer: B

Clipping removes part of signal waveform.

Q19. What is clipping circuit used for?

Correct Answer: B

Clipping circuits limit voltage levels.

Q20. What is clamping circuit?

Correct Answer: A

Clamping circuits shift waveform level.

Q21. What is Zener diode used for?

Correct Answer: B

Zener diode is used for voltage regulation.

Q22. What is operational amplifier?

Correct Answer: A

Op-amp is a high gain differential amplifier.

Q23. What is ideal op-amp gain?

Correct Answer: B

Ideal op-amp has infinite gain.

Q24. What is input impedance of ideal op-amp?

Correct Answer: B

Ideal op-amp has infinite input impedance.

Q25. What is output impedance of ideal op-amp?

Correct Answer: B

Ideal op-amp has zero output impedance.

Q26. What is comparator?

Correct Answer: B

Comparator compares two input voltages.

Q27. What is voltage regulator?

Correct Answer: B

Regulator keeps voltage constant.

Q28. What is ripple in power supply?

Correct Answer: B

Ripple is unwanted AC component in DC.

Q29. What is BJT?

Correct Answer: B

BJT stands for Bipolar Junction Transistor.

Q30. What is FET?

Correct Answer: A

FET is Field Effect Transistor.

Q31. Which is voltage controlled device?

Correct Answer: B

FET is voltage controlled device.

Q32. What is saturation region in transistor?

Correct Answer: B

Saturation means transistor is fully ON.

Q33. What is cutoff region?

Correct Answer: B

Cutoff means transistor is OFF.

Q34. What is load line in electronics?

Correct Answer: B

Load line shows operating point.

Q35. What is Q point?

Correct Answer: B

Q point is operating point in transistor.

Q36. What is distortion in amplifier?

Correct Answer: B

Distortion changes signal shape.

Q37. What is coupling capacitor used for?

Correct Answer: B

Coupling capacitor blocks DC and passes AC.

Q38. What is bandwidth?

Correct Answer: B

Bandwidth is frequency range of signal.

Q39. What is gain in amplifier?

Correct Answer: B

Gain is amplification factor.

Q40. What is saturation in diode?

Correct Answer: B

Saturation is maximum conduction state.

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