1. What is the function of a transistor?
a) Convert AC to DC
b) Amplify or switch electronic signals ✅
c) Measure resistance
a) Convert AC to DC
b) Amplify or switch electronic signals ✅
c) Measure resistance
2. What is the primary purpose of a rectifier circuit?
a) Generate AC
b) Convert AC to DC ✅
c) Store charge
3. Which component is used to store electrical energy in an electric field?
a) Resistor
b) Inductor
c) Capacitor ✅
4. What is the purpose of a Zener diode?
a) Allow current in one direction
b) Stabilize voltage ✅
c) Amplify current
5. The basic logic gate that performs the AND function has an output of 1 when:
a) Both inputs are 1 ✅
b) Both inputs are 0
c) Either input is 1
6. Which material is commonly used in semiconductor devices?
a) Copper
b) Silicon ✅
c) Iron
7. What does the term "biasing" in a transistor mean?
a) Amplification of signals
b) Applying external voltage to establish operating conditions ✅
c) Regulating temperature
8. Which of the following is a unipolar device?
a) Diode
b) MOSFET ✅
c) Bipolar Junction Transistor (BJT)
9. The unit of inductance is:
a) Farad
b) Henry ✅
c) Ohm
10. What is the primary purpose of an operational amplifier?
a) To amplify signals ✅
b) To convert AC to DC
c) To filter frequencies
11. What is a printed circuit board (PCB)?
a) A board used for soldering components ✅
b) A device for amplifying signals
c) A type of power supply
12. What is the output of a NOT gate when the input is 1?
a) 0 ✅
b) 1
c) Cannot determine
13. Which of the following is a passive component?
a) Diode
b) Transistor
c) Resistor ✅
14. The most common type of filter used in electronic circuits is:
a) Band-pass filter
b) Low-pass filter ✅
c) High-pass filter
15. What is the main function of a voltage regulator?
a) Measure voltage
b) Maintain constant output voltage ✅
c) Convert AC to DC