Basic Electronics and Mechanics MCQs

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1. What is the primary function of a diode?





2. Which component stores electrical energy in an electric field?





3. In an NPN transistor, the majority charge carriers are:





4. Which law states that the current through a conductor between two points is directly proportional to the voltage across the two points?





5. The unit of electrical resistance is:





6. A Zener diode is used for:





7. What is the primary characteristic of an ideal voltage source?





8. Which device converts AC to DC?





9. The power dissipated in a resistor is given by:





10. Which type of transistor has a P-N-P junction?





11. In a capacitor, the energy stored is proportional to:





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





13. A transistor can be used as a:





14. Which of the following is a passive component?





15. The unit of inductance is:





16. A common application of an operational amplifier is:





17. What is the main difference between a conductor and an insulator?





18. Which material is commonly used for making semiconductors?





19. The junction of a PN diode is termed as:





20. Which of the following devices is used to increase or decrease the voltage level in AC circuits?





21. An inductor stores energy in the form of:





22. Which component in a circuit opposes changes in current?





23. What does an ammeter measure?





24. The bandwidth of an amplifier is determined by:





25. Which component can be used to block DC but allow AC to pass?





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