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Electronics Laboratory MCQs

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1. Which component is commonly used to amplify weak signals in electronic circuits?





2. What is the function of a Schottky diode in electronic circuits?





3. Which instrument is used to measure the inductance of a coil?





4. In an electronic circuit, what does “ground” typically refer to?





5. Which type of diode is commonly used for voltage regulation?





6. What is the primary function of a transformer in electronics?





7. Which electronic component is used to filter out high-frequency noise from a signal?





8. What does the term “hysteresis” refer to in electronic systems?





9. Which type of circuit is used to store and process binary data in computers?





10. What is the purpose of a heat sink in electronic devices?





11. What is the primary function of a NAND gate in digital logic circuits?





12. Which component is used to store data temporarily in a digital circuit?





13. What is the role of a microcontroller in electronic systems?





14. Which of the following is an example of a passive electronic component?





15. In a digital circuit, what does “logic low” typically represent?





16. What does the term “frequency modulation” (FM) refer to in electronics?





17. Which instrument is used to measure the frequency of an electronic signal?





18. What is the purpose of a capacitor in an AC circuit?





19. Which electronic component is used to amplify or attenuate signals based on frequency?





20. What does the term “EMI” stand for in electronics?





21. What is the purpose of using a potentiometer in a circuit?





22. Which component is commonly used to store and maintain data in digital systems?





23. In an AC (Alternating Current) circuit, what is the frequency of the voltage or current?





24. What does the term “transient response” refer to in electronics?





25. Which of the following is a common application of a Schmitt trigger circuit?





26. What is the function of a relay in electronic circuits?





27. Which type of sensor is commonly used to detect light intensity in electronic systems?





28. What does the term “PWM” stand for in electronics?





29. Which component is used to protect electronic circuits from voltage spikes or surges?





30. What is the primary function of an operational amplifier (op-amp) in electronic circuits?





31. What is the unit of capacitance?





32. Which component is commonly used as a voltage-controlled switch?





33. What does the acronym “LED” stand for in electronics?





34. Which of the following is an example of an analog signal?





35. What is the primary function of a diode in electronic circuits?





36. Which type of circuit provides an output that switches between two voltage levels based on input conditions?





37. What does the term “grounding” refer to in electronics?





38. Which component is used to store and release electrical charge in a circuit?





39. What is the purpose of a resistor in an electronic circuit?





40. Which instrument is used to generate precise and stable frequencies in electronics testing?





41. What is the function of an oscilloscope in an electronics laboratory?





42. Which component is commonly used to regulate voltage in electronic circuits?





43. What does the term “breadboarding” refer to in electronics?





44. Which of the following is an example of a passive electronic component?





45. What is the purpose of using a multimeter in electronics testing?





46. In a digital circuit, what does “logic high” typically represent?





47. Which type of circuit amplifies signals without inverting them?





48. What is the primary function of a transistor in electronic circuits?





49. Which electronic component is used to store electrical energy in a circuit?





50. What is the purpose of a voltage divider circuit?






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