Introduction to Electronics & Communication Engineering (Set-1)
What is the main focus of Electronics and Communication Engineering?
A Electrical circuits
B Electronics devices
C Communication systems
D Signal processing
The primary focus of Electronics and Communication Engineering is to design, develop, and manage communication systems. These systems involve the transmission, reception, and processing of signals across different mediums such as wired, wireless, optical, etc.
Which of the following is the basic building block of a semiconductor device?
A Transistor
B Resistor
C Diode
D Capacitor
Transistors are essential components in semiconductor devices, acting as amplifiers, switches, and signal modulators. They are used in nearly all modern electronic systems, from computers to communication devices.
What does PCB stand for in electronics?
A Primary Circuit Board
B Processing Circuit Board
C Power Circuit Board
D Printed Circuit Board
PCB refers to a Printed Circuit Board, which is used to mechanically support and electrically connect electronic components. It is a crucial part of modern electronic devices, allowing for compact and efficient circuit design.
Which component is used to store electrical energy temporarily in a circuit?
A Resistor
B Capacitor
C Inductor
D Transistor
A capacitor stores electrical energy temporarily in an electric field. It is commonly used for filtering, energy storage, and signal coupling in various electronic circuits.
What is the purpose of modulation in communication systems?
A To reduce power loss
B To increase noise
C To improve signal quality
D To change the frequency
Modulation is used in communication systems to modify a carrier wave in order to transmit data efficiently over long distances while maintaining signal integrity and reducing noise interference.
What is the primary function of an antenna?
A Signal reception and transmission
B Noise reduction
C Signal modulation
D Power amplification
Antennas are essential components for both receiving and transmitting radio waves. They convert electrical signals into electromagnetic waves and vice versa, enabling wireless communication.
What does IoT stand for in electronics?
A Interactive Online Technology
B Internet of Technology
C Internet of Things
D Integrated Optical Technology
IoT, or Internet of Things, refers to the network of physical objects embedded with sensors and software, allowing them to connect, exchange data, and be controlled remotely via the internet.
Which of the following is a type of digital electronic component?
A Transistor
B Diode
C Capacitor
D Microprocessor
A microprocessor is a digital electronic component that serves as the brain of many digital systems, executing instructions, processing data, and controlling operations within a device.
Which type of signal has continuous values over time?
A Pulse signal
B Digital signal
C Analog signal
D Square wave
Analog signals have continuous values over time, representing varying physical quantities such as voltage, current, or sound. They can take any value within a certain range, unlike digital signals, which are discrete.
What does VLSI stand for in electronics?
A Variable Logic System Integration
B Very Large Scale Integration
C Voltage Level System Integration
D Voltage Logic System Integration
VLSI, or Very Large Scale Integration, refers to the process of creating integrated circuits by combining thousands or millions of transistors into a single chip, enabling powerful and compact electronic devices.
What is the main function of a microprocessor in an embedded system?
A Data processing
B Voltage regulation
C Power generation
D Signal filtering
In an embedded system, the microprocessor handles data processing, performing tasks such as computation, decision making, and control, which are essential for the system’s operation.
Which of the following is an example of a communication protocol?
A Microprocessor
B Internet
C Bluetooth
D Transistor
Bluetooth is a communication protocol that enables short-range wireless communication between devices. It facilitates data transfer, audio streaming, and device control over short distances.
What is the primary purpose of signal processing?
A Generation of signals
B Conversion of signals
C Amplification of signals
D Filtering and analyzing signals
Signal processing involves manipulating and analyzing signals to improve their quality, remove noise, and extract useful information. This is essential in applications like audio processing, telecommunications, and image analysis.
What is an embedded system?
A A type of communication network
B A combination of hardware and software
C A type of software
D A type of hardware
An embedded system is a specialized computing system designed for specific functions, consisting of both hardware (e.g., sensors, microprocessors) and software (programming), often used in devices like washing machines, cars, and smartphones.
Which of the following is a common application of digital electronics?
A Data processing
B Signal modulation
C Power distribution
D Signal transmission
Digital electronics are widely used in data processing, where binary signals are manipulated to perform tasks like calculations, logic operations, and storage, which are fundamental to modern computing and communications.