Q1: 1. Which of the following materials is commonly used as a semiconductor in electronic devices?

• A) Copper
• B) Silicon
• C) Aluminum
• D) Iron

Q2: 3. What is the most common application of a P-N junction diode?

• A) Solar cells
• B) Light bulbs
• C) Speakers
• D) Motors

Q3: 4. Which of the following is NOT a characteristic of an ideal diode?

• A) Zero forward voltage drop
• B) Infinite reverse breakdown voltage
• C) Instantaneous response to changes in voltage
• D) Perfect insulation in reverse bias

Q4: 5. What is the function of a transistor in an electronic circuit?

• A) Control current flow
• B) Generate light
• C) Produce sound
• D) Store data

Q5: 6. Which type of transistor has higher input impedance?

• A) NPN
• B) PNP
• C) JFET
• D) MOSFET

Q6: 7. What is the primary advantage of using an integrated circuit (IC) in electronic devices?

• A) Reduced size and weight
• B) Higher power consumption
• C) Lower cost
• D) Slower processing speed

Q7: 8. Which component is commonly used to amplify weak electrical signals in electronic circuits?

• A) Resistor
• B) Capacitor
• C) Inductor
• D) Transistor

Q8: 9. In a simple series circuit with a resistor and an LED, what happens if the LED is connected backward?

• A) LED will not light up
• B) LED will shine brighter
• C) Resistor will burn out
• D) Circuit will short circuit

Q9: 10. Which property of a semiconductor material allows for the control of current flow in electronic devices?

• A) Conductivity
• B) Resistivity
• C) Bandgap
• D) Flexibility

Q10: 11. How does a diode protect electronic circuits from reverse voltage?

• A) By blocking current flow
• B) By increasing current flow
• C) By reducing resistance
• D) By regulating voltage

Q11: 12. Which type of diode is commonly used in voltage regulation circuits?

• A) Zener diode
• B) Light-emitting diode
• C) Schottky diode
• D) Tunnel diode

Q12: 13. What is the main purpose of a capacitor in an electronic circuit?

• A) Store electrical energy
• B) Amplify signals
• C) Control current flow
• D) Convert AC to DC

Q13: 14. Which type of transistor has a negative temperature coefficient of resistance?

• A) NPN
• B) PNP
• C) JFET
• D) MOSFET

Q14: 15. How does a JFET differ from a MOSFET?

• A) JFET is voltage-controlled, while MOSFET is current-controlled
• B) JFET is current-controlled, while MOSFET is voltage-controlled
• C) JFET has higher input impedance
• D) MOSFET has a depletion region

Q15: 16. Which component is commonly used to protect electronic circuits from voltage spikes?

• A) Resistor
• B) Capacitor
• C) Inductor
• D) Diode

Q16: 17. How does a light-dependent resistor (LDR) behave in response to changing light intensity?

• A) Increases resistance in bright light
• B) Decreases resistance in bright light
• C) Maintains constant resistance
• D) Only works in darkness

Q17: 18. Which type of semiconductor device is used to amplify or switch electronic signals in digital circuits?

• A) Diode
• B) Transistor
• C) Capacitor
• D) Inductor

Q18: 19. What is the function of a rectifier in an electronic circuit?

• A) Store energy
• B) Convert AC to DC
• C) Amplify signals
• D) Generate heat

Q19: 20. How does a Schottky diode differ from a regular P-N junction diode?

• A) Schottky diode has a lower forward voltage drop
• B) Schottky diode is used for signal modulation
• C) Schottky diode has high reverse breakdown voltage
• D) Schottky diode is not affected by temperature

Q20: 21. Which type of material is commonly used for the substrate in integrated circuits?

• A) Glass
• B) Plastic
• C) Silicon
• D) Wood

Q21: 22. How does a varactor diode change its capacitance in response to voltage?

• A) Increases capacitance with increasing voltage
• B) Decreases capacitance with increasing voltage
• C) Maintains constant capacitance
• D) Only works at a specific voltage

Q22: 23. What is the primary function of a voltage regulator in an electronic device?

• A) Control current flow
• B) Stabilize output voltage
• C) Increase power consumption
• D) Generate electromagnetic interference

Q23: 24. Which component is commonly used to store charge in electronic circuits?

• A) Resistor
• B) Capacitor
• C) Inductor
• D) Diode

Q24: 25. How does a photodiode differ from a regular diode?

• A) Photodiode emits light
• B) Photodiode detects light
• C) Photodiode has a lower forward voltage drop
• D) Photodiode is used for voltage regulation