NPTEL Introduction to Industry 4.0 and Industrial Internet of Things Week 6 Assignment Answers 2024 (July-October)

Week 6: Assignment 6 - Introduction to Industry 4.0 and IoT Quiz Solutions"

Description:

This article provides the solutions and explanations for the Week 6 assignment of the NPTEL course on Introduction to Industry 4.0 and the Industrial Internet of Things (IoT). Each question is addressed with detailed answers to enhance understanding of IoT concepts and applications in industry.

1. Which of the following is one of the benefits of sensor usage in industry?

• Answer: (B) Reduced manual intervention for sensing in hazardous areas
• Reason: Sensors automate data collection and monitoring, reducing the need for human presence in hazardous or difficult-to-reach environments, thereby improving safety and efficiency.

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2. Ultrasonic sensors can be used for __________. Fill in the blank.

• Answer: (D) All of the above
• Reason: Ultrasonic sensors can perform multiple functions, including object detection, distance measurement, and dynamic body detection, making them versatile tools in various applications.

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3. Which sensor can be used for distance measurement, pattern matching, color checking, structured lighting, and motion capture?

• Answer: (D) Image sensor
• Reason: Image sensors capture visual information that can be analyzed for various purposes, such as distance measurement, pattern matching, color checking, and more.

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4. What is another name for MOS gas sensors?

• Answer: (B) Chem-Resistive Gas sensors
• Reason: MOS (Metal-Oxide-Semiconductor) gas sensors are also known as chem-resistive sensors because they change their electrical resistance when exposed to certain gases.

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5. What is the 'Optimum Temperature' in the context of MOS gas sensors?

• Answer: (B) The temperature at which the sensor gives the best response
• Reason: The optimum temperature for a MOS gas sensor is the point at which its sensitivity and response time are maximized, allowing it to detect gas concentrations effectively.

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6. What happens to the resistance of a gas sensor when it detects Volatile Organic Compounds (VOCs)?

• Answer: (B) The resistance changes from its baseline resistance
• Reason: The presence of VOCs alters the electrical resistance of gas sensors, providing a detectable signal that indicates the concentration of VOCs.

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7. What are the typical requirements for industrial communication?

• Answer: (D) High duty-cycle, low latency, high jitter
• Reason: Industrial communication systems require high duty-cycles for continuous operation, low latency for real-time responsiveness, and can tolerate some level of jitter depending on the application.

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8. What is the range of data transmission rate for EtherCat?

• Answer: (C) 1 Gbps
• Reason: EtherCat (Ethernet for Control Automation Technology) supports high data transmission rates, typically up to 1 Gbps, to ensure fast communication in automation environments.

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9. Which topology is the EtherNet/IP standard based on?

• Answer: (B) Active star topology
• Reason: EtherNet/IP, used in industrial networks, commonly employs an active star topology where each node is connected to a central hub or switch.

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10. Which Profibus variant handles communication between PCs and Programmable Logic Controllers?

• Answer: (A) Profibus DP
• Reason: Profibus DP (Decentralized Peripherals) is designed for fast communication between automation systems like PCs and PLCs in industrial environments.

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11. Which Profibus variant is suitable for hazardous environments?

• Answer: (B) Profibus PA
• Reason: Profibus PA (Process Automation) is specifically designed for use in potentially explosive or hazardous environments, providing safety and reliability.

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12. Which network topology does the Interbus use?

• Answer: (C) Bus Topology
• Reason: Interbus uses a bus topology where devices are connected in a linear or branched manner, facilitating efficient communication.

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13. What is the latency supported by Tactile Internet?

• Answer: (A) < 1 ms round trip latency
• Reason: The Tactile Internet aims for ultra-low latency communication, with round-trip times under 1 millisecond, to support real-time applications like remote surgery or autonomous driving.

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14. Which frequency band does the 5G NR use for high-band communication?

• Answer: (C) >24 GHz
• Reason: 5G New Radio (NR) uses millimeter-wave frequencies above 24 GHz for high-band communication, offering higher data rates and lower latency.

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15. What are the three components of the Modbus architecture?

• Answer: (D) Modbus Master, Modbus Gateway, Modbus Slaves
• Reason: Modbus architecture consists of a master device that initiates communication, slaves that respond, and gateways that facilitate communication across different networks.