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