Introduction to Electronics & Communication Engineering (Set-7)
What is the purpose of telecommunications in modern society?
A Signal modulation
B Signal amplification
C Long distance communication
D Data storage
Telecommunications enables the transmission of data, voice, and video over long distances using electronic devices and systems. It connects people globally, supporting essential functions like phone calls, internet, and broadcasting.
Which of the following is an example of an analog communication system?
A Telephone
B Fiber optics
C Digital radio
D Television
Traditional telephone systems use analog signals to transmit voice data. These signals vary continuously in amplitude or frequency, allowing for real time audio communication over long distances.
What is the primary function of a control system in electronics?
A Signal transmission
B Data conversion
C Signal amplification
D Maintaining system stability
A control system is designed to regulate the behavior of other devices or systems. It ensures that the desired output is achieved by adjusting inputs, maintaining stability and accuracy in processes like temperature control or motor speed.
What is VLSI technology primarily used for in electronics?
A Signal filtering
B Integrated circuit design
C Wireless communication
D Power generation
VLSI (Very Large Scale Integration) allows the integration of thousands or millions of transistors onto a single chip, enabling the development of complex and compact electronic devices like microprocessors and memory chips.
Which of the following is a key advantage of digital communication over analog communication?
A Wider bandwidth
B Continuous signal transmission
C Less susceptibility to noise
D Higher power consumption
Digital communication is less affected by noise compared to analog communication because digital signals are represented by discrete values (0s and 1s), which are easier to distinguish from noise, ensuring higher fidelity in data transmission.
What is the role of modulation in a communication system?
A To encode data onto a carrier wave
B To filter noise
C To convert signals from digital to analog
D To amplify the signal
Modulation is the process of varying a carrier wave’s amplitude, frequency, or phase to encode information, making it suitable for transmission over long distances and ensuring it reaches the receiver without loss of data.
What type of signal does a microcontroller process?
A Analog
B Continuous
C Power
D Digital
Microcontrollers primarily process digital signals, which consist of discrete values (0s and 1s). These signals are used to control various devices, perform calculations, and handle logical operations in embedded systems.
Which of the following is used in a VLSI design to connect various components on a chip?
A Resistors
B Interconnects
C Transistors
D Capacitors
In VLSI design, interconnects are the conductive paths used to connect transistors, resistors, capacitors, and other components on a chip. These interconnects are critical for proper circuit functionality and signal transmission within the chip.
What is the main purpose of a feedback loop in a control system?
A To store data
B To regulate signal strength
C To monitor and adjust system performance
D To control power
A feedback loop in control systems monitors the output and compares it to a desired setpoint. Based on this comparison, adjustments are made to the input, ensuring the system remains stable and operates within the desired parameters.
What does a telecommunications protocol specify?
A How devices are powered
B How signals are generated
C How devices store data
D How data is transmitted
A telecommunications protocol defines the rules and conventions for data exchange between devices over communication networks. It ensures proper data encoding, error correction, and synchronization to facilitate reliable communication.
Which component is essential in a microprocessor for executing instructions?
A ALU (Arithmetic Logic Unit)
B Control unit
C Memory
D Input/output ports
The Arithmetic Logic Unit (ALU) is a critical part of the microprocessor that performs all arithmetic and logical operations. It is responsible for executing instructions such as addition, subtraction, and logical comparisons.
What is the advantage of using optical fibers in communication systems?
A Lower signal strength
B Faster data transfer rates
C Higher power consumption
D Limited bandwidth
Optical fibers provide high bandwidth and faster data transfer rates compared to traditional copper cables. The use of light signals in fiber optics reduces signal degradation over long distances, making it ideal for high speed communication networks.
Which of the following is a feature of control systems in robotics?
A Path planning
B Digital signal processing
C Motor control
D Signal generation
Control systems in robotics are responsible for controlling motors and actuators to perform movements and tasks. They ensure that the robot’s actions are precise and align with programmed commands and sensory inputs.
In digital electronics, what is the primary function of a logic gate?
A Perform logical operations
B Filter signals
C Store data
D Perform calculations
Logic gates perform basic logical operations, such as AND, OR, NOT, XOR, etc., on binary inputs. These gates are fundamental building blocks of digital circuits, enabling decision making processes and complex computations in electronic systems.
What is the role of error detection in communication protocols?
A To modulate signals
B To reduce power consumption
C To ensure reliable data transmission
D To increase data rate
Error detection mechanisms in communication protocols, such as checksums and parity bits, are used to identify transmission errors. These systems ensure that data received is accurate and reliable, improving overall communication efficiency.