- 1. Electronic engineering is a broad field that involves the design and development of electronic devices, components, systems, and equipment. Electronic engineers use principles of electrical and electronics engineering to create innovative solutions for various industries such as telecommunications, healthcare, aerospace, and more. They work on projects ranging from designing circuits and microchips to developing complex systems like communication networks and control systems. With a focus on solving real-world problems, electronic engineers play a crucial role in advancing technology and improving our daily lives.
What is the SI unit of electrical resistance?
A) Ohm
B) Ampere
C) Volt
D) Watt
- 2. What is the purpose of a capacitor in an electronic circuit?
A) To amplify signals
B) To store and release electrical energy
C) To conduct electricity efficiently
D) To control voltage levels
- 3. What is the basic building block of digital circuits?
A) Capacitor
B) Logic gate
C) Transistor
D) Resistor
- 4. What does PCB stand for?
A) Personal Computer Backup
B) Programmable Control Block
C) Printed Circuit Board
D) Power Control Box
- 5. Which electronic component allows current to flow in only one direction?
A) Diode
B) Resistor
C) Transistor
D) Capacitor
- 6. What type of signal has two voltage levels representing binary values?
A) Digital signal
B) AC signal
C) PWM signal
D) Analog signal
- 7. Which law states that the current through a conductor between two points is directly proportional to the voltage across the two points?
A) Lenz's Law
B) Kirchhoff's Law
C) Ohm's Law
D) Faraday's Law
- 8. What is the purpose of a rectifier in a power supply?
A) To change frequency
B) To convert AC to DC
C) To regulate voltage
D) To store energy
- 9. Which type of memory retains data even when the power is turned off?
A) Cache memory
B) RAM
C) ROM
D) Non-volatile memory
- 10. What component is used to store electrical charge in a circuit?
A) Inductor
B) Resistor
C) Diode
D) Capacitor
- 11. Which device is used to measure voltage in a circuit?
A) Voltmeter
B) Oscilloscope
C) Ammeter
D) Multimeter
- 12. What does CMOS stand for in electronic engineering?
A) Controlled Memory Output System
B) Complementary Metal-Oxide-Semiconductor
C) Computerized Machine Operating Software
D) Coordinated Monitoring System
- 13. Which law states that the sum of the currents entering a node is equal to the sum of the currents leaving the node?
A) Ohm's Law
B) Kirchhoff's Current Law
C) Faraday's Law
D) Kirchhoff's Voltage Law
- 14. Which type of logic gate has an output that is true if any input is true?
A) AND gate
B) NOT gate
C) NOR gate
D) OR gate
- 15. Which component is used to connect different parts of a circuit together?
A) Diode
B) Wire
C) Capacitor
D) Resistor
- 16. What component is used to store data in a computing system temporarily?
A) ROM
B) Hard drive
C) Cache memory
D) RAM
- 17. What is the process of converting physical quantities into electrical signals?
A) Conduction
B) Transformation
C) Transduction
D) Transmission
- 18. What does FPGA stand for in electronic engineering?
A) Fast Processing Graphics Adapter
B) Flexible Programming Grid Architecture
C) Floating Point Graphics Accelerator
D) Field-Programmable Gate Array
- 19. What is the standard unit of frequency in electronic engineering?
A) Joule
B) Farad
C) Watt
D) Hertz
- 20. RFID technology stands for ________ Identification.
A) Responsive Form
B) Radio Frequency
C) Remote Field
D) Rapid Frequency
- 21. What is the process of converting analog signals to digital signals called?
A) Analog-to-Digital Conversion
B) Phase Shift
C) Frequency Modulation
D) Amplification
- 22. Which electronic device converts digital signals to analog signals?
A) Digital-to-Analog Converter (DAC)
B) Analog-to-Digital Converter (ADC)
C) Multiplexer
D) Comparator
- 23. Which material is commonly used as a conductor in electronic circuits?
A) Aluminum
B) Copper
C) Gold
D) Silver
- 24. What is the fundamental unit of digital electronics?
A) Bit
B) Byte
C) Ohm
D) Volt
- 25. Which type of filter allows certain frequencies to pass while attenuating others?
A) Low-pass filter
B) Band-pass filter
C) Notch filter
D) High-pass filter
- 26. Which electronic component is used for signal amplification and filtering?
A) Flip-Flop
B) Demultiplexer
C) Op-Amp (Operational Amplifier)
D) Multiplexer
- 27. Which component is used to amplify signals in an electronic circuit?
A) Diode
B) Transistor
C) Inductor
D) Resistor
- 28. What does UART stand for in electronics?
A) Universal Asynchronous Receiver/Transmitter
B) User Action Responsive Terminal
C) Unified Application and Remote Transfer
D) Ultrafast Automated Relay Technology
- 29. Which type of transmission line consists of a conducting outer shell and a central wire conductor?
A) Twisted pair cable
B) Coaxial cable
C) Parallel wire transmission line
D) Fiber optic cable
- 30. Which type of display technology uses organic compounds that emit light when an electric current passes through them?
A) Plasma
B) LED
C) OLED
D) LCD
- 31. What is the property of an electrical circuit that opposes the flow of current?
A) Reactance
B) Resistance
C) Inductance
D) Conductance
- 32. What type of semiconductor material is used in most solar cells?
A) Silicon
B) Gallium Arsenide
C) Indium Phosphide
D) Germanium
- 33. What is the primary function of a regulator in an electronic circuit?
A) To store energy
B) To amplify signals
C) To maintain a constant output voltage
D) To change frequency
- 34. Which type of component stores charge and generates a magnetic field in a circuit?
A) Capacitor
B) Resistor
C) Inductor
D) Transistor
- 35. Which electronic component is used to protect circuits from voltage spikes?
A) Thyristor
B) Varistor
C) SCR
D) Triac
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