- 1. Electronics is the branch of physics and technology that deals with the study and application of electrical circuits involving active electrical components such as vacuum tubes, transistors, diodes, integrated circuits, and associated passive interconnection technologies. The discipline typically also designs passive electrical components, usually based on printed circuit boards.
What is the basic unit of resistance?
A) Watt
B) Ampere
C) Ohm
D) Volt
- 2. Which component stores electrical charge?
A) Diode
B) Capacitor
C) Resistor
D) Inductor
- 3. What does the acronym LED stand for?
A) Laser Emitting Detector
B) Light Emitting Diode
C) Light Enhancing Device
D) Long Electrical Device
- 4. In electronics, what does AC stand for?
A) Analog Communication
B) Automatic Control
C) Alternating Current
D) Amplified Circuit
- 5. Which component amplifies or switches electronic signals?
A) Potentiometer
B) Transistor
C) Transformer
D) Relay
- 6. What is the process of converting sound waves into electrical signals known as?
A) Conversion
B) Transduction
C) Transmission
D) Modulation
- 7. Which type of display technology uses organic compounds to emit light?
A) LED
B) OLED
C) Plasma
D) LCD
- 8. What is the SI unit of frequency?
A) Tesla
B) Watt
C) Hertz
D) Volt
- 9. What property of a material is measured in henries?
A) Inductance
B) Conductance
C) Capacitance
D) Resistance
- 10. Which device converts digital signals into analog signals?
A) ADC
B) OP-AMP
C) DAC
D) FET
- 11. In semiconductor devices, what does CMOS stand for?
A) Circuit Model for Output Signals
B) Compact Military Oscillator System
C) Centralized Memory Operation System
D) Complementary Metal-Oxide-Semiconductor
- 12. What is the basic unit of capacitance?
A) Farad
B) Ohm
C) Ampere
D) Volt
- 13. Which electronic component allows current to flow in only one direction?
A) Resistor
B) Diode
C) Transistor
D) Capacitor
- 14. What is used to control the amount of current flow in a circuit?
A) Capacitor
B) Diode
C) Transistor
D) Resistor
- 15. Which type of motor uses a rotating magnetic field to generate motion?
A) Stepper
B) Servo
C) Induction
D) Brushed DC
- 16. What type of wave does not require a medium to travel through?
A) Sound
B) Mechanical
C) Electromagnetic
D) Water
- 17. What is the basic function of an oscillator in electronics?
A) Filter Out Noise
B) Control Voltage Levels
C) Amplify Signals
D) Generate Waveforms
- 18. In digital logic, what does NAND stand for?
A) NOT-AND
B) Non-Altering Node Detector
C) Negative AND Gate
D) Next Available Node Designator
- 19. What is the ratio of an inductor's reactance to its resistance called?
A) Damping Ratio
B) Q Factor
C) Amplification Ratio
D) Power Factor
- 20. Which term represents the flow of electrical charge per unit time?
A) Voltage
B) Resistance
C) Power
D) Current
- 21. What component is commonly used to provide voltage regulation in power supplies?
A) Rectifier
B) Voltage Regulator
C) Transformer
D) Fuse
- 22. What does CPU stand for in a computer?
A) Computer Processing Unit
B) Central Power Unit
C) Control Processing Unit
D) Central Processing Unit
- 23. Which type of memory retains data even when powered off?
A) RAM
B) Cache
C) ROM
D) EEPROM
- 24. What does HDMI stand for?
A) High-Definition Multimedia Interface
B) High-Definition Media Input
C) Hyperlink Data Management Interface
D) Highly-Detailed Media Interface
- 25. Which material is commonly used as a semiconductor in electronic devices?
A) Copper
B) Aluminum
C) Silicon
D) Gold
- 26. Which device converts analog signals to digital signals?
A) DAC
B) ADC
C) GPU
D) MCU
- 27. Which type of wire has the highest resistance?
A) Aluminum
B) Nichrome
C) Silver
D) Copper
- 28. What term describes the number of cycles per second in an alternating current?
A) Frequency
B) Amperage
C) Resistance
D) Voltage
- 29. What does PCB stand for in electronics?
A) Printed Circuit Board
B) Processing Circuit Base
C) Personal Computer Base
D) Power Control Board
- 30. Which type of wire is a good conductor of electricity?
A) Rubber
B) Copper
C) Plastic
D) Glass
- 31. What does USB stand for in computing?
A) User System Base
B) Universal Serial Bus
C) Unified Signal Bus
D) Ultra Speed Bandwidth
- 32. Which type of motor uses direct current?
A) DC Motor
B) Stepper Motor
C) Servo Motor
D) AC Motor
- 33. What component is used to change voltage in an electronic circuit?
A) Transformer
B) Resistor
C) Transistor
D) Capacitor
- 34. What does RF stand for in electronics?
A) Radio Frequency
B) Remote Frequency
C) Repetitive Frequency
D) Rapid Frequency
- 35. Which electronic component stores data in binary form?
A) Relay
B) Inductor
C) Memory Chip
D) Potentiometer
- 36. What is the basic unit of digital information storage?
A) Byte
B) Bit
C) Word
D) Nibble
- 37. In which component is the CPU typically housed in a desktop computer?
A) Power Supply Unit
B) Hard Drive
C) Graphics Card
D) Motherboard
- 38. Which type of memory is volatile and loses its data when power is turned off?
A) ROM
B) Hard Disk Drive
C) RAM
D) Flash
- 39. Which electronic component is used to store a single binary digit?
A) Multiplexer
B) Encoder
C) Flip-flop
D) Buffer
- 40. Which type of memory is non-volatile and commonly used for long term storage?
A) SRAM
B) Flash
C) Registers
D) DRAM
- 41. What is the unit of electric current?
A) Ampere
B) Ohm
C) Volt
D) Watt
- 42. Which component is responsible for producing sound in electronic devices?
A) Antenna
B) Microphone
C) Amplifier
D) Speaker
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