Q1) What is the primary function of a diode?

a) Voltage regulation

b) Current amplification

c) Signal modulation

d) Rectification

Q2) Which material is commonly used as a semiconductor in electronic devices?

a) Copper

b) Aluminum

c) Silicon

d) Iron

Q3) In a bipolar junction transistor (BJT), which regions are typically doped with impurities?

a) Base and collector

b) Collector and emitter

c) Base and emitter

d) Emitter and substrate

Q4) Which of the following devices is used to store electrical charge?

a) Resistor

b) Capacitor

c) Inductor

d) Diode

Q5) What is the basic unit of capacitance?

a) Henry

b) Volt

c) Farad

d) Watt

Q6) What is the function of a resistor in an electronic circuit?

a) To amplify signals

b) To store energy

c) To regulate voltage

d) To oppose the flow of current

Q7) Which of the following materials has the highest conductivity?

a) Glass

b) Rubber

c) Copper

d) Plastic

Q8) Which of the following components acts as an amplifier in electronic circuits?

a) Capacitor

b) Transistor

c) Resistor

d) Diode

Q9) What is the purpose of a voltage regulator?

a) To amplify voltage

b) To regulate the flow of current

c) To stabilize the output voltage

d) To increase the resistance in a circuit

Q10) Which type of semiconductor material has both electrons and holes as charge carriers?

a) N-type

b) P-type

c) Intrinsic

d) Extrinsic

Q11) Which of the following components can store binary data in digital circuits?

a) Transistor

b) Capacitor

c) Diode

d) Flip-flop

Q12) What is the primary function of a zener diode?

a) Rectification

b) Amplification

c) Voltage regulation

d) Signal modulation

Q13) Which of the following is NOT a type of diode?

a) Schottky diode

b) Zener diode

c) Light-emitting diode (LED)

d) Field-effect diode

Q14) Which device is used to convert analog signals to digital signals?

a) Comparator

b) Multiplexer

c) Analog-to-digital converter (ADC)

d) Digital-to-analog converter (DAC)

Q15) What does LED stand for in electronics?

a) Light Emitting Diode

b) Low Energy Detector

c) Light Enhancing Device

d) Laser Emitting Diode

Q16) Which semiconductor device is used for switching and amplification?

a) Resistor

b) Capacitor

c) Transistor

d) Inductor

Q17) What is the purpose of a flyback diode?

a) To protect against voltage spikes

b) To amplify signals

c) To regulate voltage

d) To store energy

Q18) Which component is typically used to generate a clock signal in digital circuits?

a) Resistor

b) Capacitor

c) Crystal oscillator

d) Transistor

Q19) Which of the following is a passive electronic component?

a) Transistor

b) Capacitor

c) Diode

d) Operational amplifier

Q20) What is the primary function of an operational amplifier (op-amp)?

a) To amplify signals

b) To store energy

c) To regulate voltage

d) To generate oscillations