Internet of Things (IoT) for Power Systems – MCQs – EE

1. The Internet of Things (IoT) in power systems refers to:
(A) Connecting mechanical parts only
(B) Interconnecting smart devices for monitoring and control
(C) Manual data collection from power stations
(D) Offline communication networks

2. The key purpose of IoT in smart grids is to:
(A) Increase manual operations
(B) Enable real-time data acquisition and decision-making
(C) Reduce digital communication
(D) Isolate power systems

3. The essential components of an IoT system are:
(A) Sensors, communication network, and data processing
(B) Motors, generators, and resistors
(C) Transformers, capacitors, and relays
(D) Switches, fuses, and breakers

4. In a smart grid, IoT devices help in:
(A) Increasing manual control
(B) Monitoring, automation, and optimization
(C) Reducing communication
(D) Limiting system flexibility

5. Which communication technology is most commonly used in IoT for power systems?
(A) ZigBee, Wi-Fi, and LTE
(B) Fiber optics only
(C) Morse code
(D) Analog radio

6. Smart meters in IoT-based power systems are used for:
(A) Power generation
(B) Real-time energy consumption monitoring
(C) Voltage step-down
(D) Load disconnection only

7. The function of IoT sensors in power systems is to:
(A) Generate electric power
(B) Measure parameters like voltage, current, and temperature
(C) Replace transformers
(D) Convert DC to AC

8. A major benefit of IoT-enabled grids is:
(A) Real-time fault detection and preventive maintenance
(B) Reduced automation
(C) Manual relay coordination
(D) High latency control

9. Which of the following is an IoT communication protocol?
(A) MQTT
(B) TCP/IP only
(C) RS-485
(D) None of the above

10. IoT helps utilities perform:
(A) Predictive maintenance and load forecasting
(B) Randomized operations
(C) Manual billing
(D) Relay coordination only

11. The “smart grid” is best defined as:
(A) A grid with advanced IoT-based monitoring and control
(B) A conventional power network
(C) A mechanical control grid
(D) An isolated DC grid

12. IoT-based automation improves:
(A) Efficiency, reliability, and sustainability of power systems
(B) Manual operation time
(C) Human error rates
(D) Downtime and losses

13. Edge computing in IoT for power systems means:
(A) Data processing closer to the data source
(B) Centralized cloud processing
(C) Manual computation
(D) Off-grid computation only

14. IoT helps in demand-side management by:
(A) Monitoring consumer load patterns and adjusting demand
(B) Isolating users
(C) Disabling data collection
(D) Controlling generation only

15. A smart transformer in IoT-based grids can:
(A) Communicate with the grid and adjust voltage automatically
(B) Operate manually
(C) Block all data
(D) Function without sensors

16. IoT in renewable energy systems helps in:
(A) Forecasting energy production and optimizing dispatch
(B) Disconnecting renewable sources
(C) Limiting energy storage
(D) Isolating solar systems

17. Cloud computing in IoT systems is used for:
(A) Storing and analyzing large volumes of data
(B) Generating AC power
(C) Transmitting current
(D) Motor control

18. The primary layer of IoT architecture responsible for sensing is:
(A) Perception layer
(B) Network layer
(C) Application layer
(D) Control layer

19. The layer responsible for data transmission in IoT is:
(A) Network layer
(B) Sensing layer
(C) Control layer
(D) Storage layer

20. The application layer in IoT systems performs:
(A) Data presentation, analysis, and decision-making
(B) Signal amplification
(C) Sensor calibration
(D) Energy generation

21. The key security challenge in IoT-based power systems is:
(A) Cybersecurity and data privacy
(B) Mechanical failure
(C) Physical wiring issues
(D) Weather interference

22. IoT in power systems enables real-time fault localization using:
(A) Smart sensors and analytics
(B) Manual inspection
(C) Relay delays
(D) Load shedding only

23. A phased measurement unit (PMU) is an IoT device used for:
(A) Monitoring voltage and current phasors in real-time
(B) Switching transformers
(C) Load shedding
(D) Mechanical balancing

24. IoT-based grid monitoring helps utilities to:
(A) Reduce outages and improve reliability
(B) Increase manual dependency
(C) Eliminate data
(D) Disable automation

25. The LoRaWAN protocol in IoT systems is known for:
(A) Long-range, low-power communication
(B) High-speed broadband
(C) Fiber-based data
(D) Wired connection

26. IoT devices in power systems primarily communicate via:
(A) Wireless and wired networks
(B) Optical fibers only
(C) Manual logs
(D) Voice channels

27. The SCADA system integrates with IoT to provide:
(A) Real-time supervisory control and data acquisition
(B) Manual operation
(C) Generator synchronization only
(D) Isolated monitoring

28. IoT helps consumers participate in:
(A) Demand response programs
(B) Grid isolation
(C) Manual meter reading
(D) Power loss increase

29. A key advantage of IoT in power distribution networks is:
(A) Reduced outage duration and automatic fault isolation
(B) Increased downtime
(C) Slower data collection
(D) Manual restoration

30. The future trend of IoT in power systems focuses on:
(A) Smart grids, AI integration, and decentralized control
(B) Manual operations
(C) Removing communication links
(D) Reducing data analytics