NPTEL Introduction To Industry 4.0 And Industrial Internet Of Things Week 1 Assignment Answers 2024
1. What is the primary function of a transducer?
a. To store energy
b. To convert signal from one physical form to another physical form
c. To generate eddy current
d. To generate heat
Answer :- b
2. Which device converts sound to an electrical signal?
a. Speaker
b. Antenna
c. Microphone
d. Strain gauge
Answer :- For Answer Click Here
3. Which sensor can detect gases like LPG, CH4, and CO?
a. DHT22
b. MQ-5
c. HC-SR04
d. PIR
Answer :-
4. What does ‘Resolution’ indicate in a sensor?
a. The correctness of the output
b. The smallest change in input that can be detected
C. The range of sensing
d. The difference between standard and measured values
Answer :- For Answer Click Here
5. Which modulation technique is used by Zigbee for the 2.4 GHz band?
a. BPSK
b. QPSK
c. OQPSK
d. FSK
Answer :-
6. What does 6LoWPAN optimize?
a. Load balancing in Legacy High-power networks
b. Packet transmission in Low-power and lossy networks (LLN)
c. Cryptography in Medium-power networks
d. Error detection in Long-range networks
Answer :-
7. How long is the Network ID in a Z-Wave network?
a. 1 Byte
b. 2 Bytes
c. 4 Bytes
d. 8 Bytes
Answer :- For Answer Click Here
8. Which range is typical for Class 1 Bluetooth radios?
a. 1 meter
b. 10 meters
C. 30 meters
d. 100 meters
Answer :-
9. What does the Constrained RESTful Environments (CoRE) framework include for service discovery?
a. Registration Interface (RI)
b. Resource Directory (RD)
c. REST based protocols such as HTTP and CoAP
d. All of the above
Answer :-
10. Which policy controls the duration for which transmitted data is considered to be valid in an loT network?
a. History policy
b. Latency budget policy
c. Lifespan policy
d. Deadline policy
Answer :- For Answer Click Here
11. How many levels of QoS does MQTT support?
a. 2
b. 3
c. 4
d. 5
Answer :-
12. Which protocol is CoAP based on?
a. TCP
b. FTP
C. UDP
d. HTTP
Answer :-
13. For what kind of applications is AMQP optimized for?
a. Entertainment
b. Financial
c. Vehicular
d. Educational
Answer :- For Answer Click Here
14. Which layer in loT architecture is responsible for predictive analytics and data management?
a. Sensing layer
b. Networking layer
C. Service layer
d. Interface layer
Answer :-
15. State True or False. A sensor’s accuracy does not depend upon it’s resolution.
a. True
b. False
Answer :- For Answer Click Here
NPTEL Introduction To Industry 4.0 And Industrial Internet Of Things Week 4 Assignment Answers 2023
1. Cybersecurity involves the security of
a. Hardware and software
b. Software and data
c. Hardware, software, and data
d. Hardware, software, data and processes
Answer :- For Answer Click Here
2. _____security represents the set of policies that monitor and prevent unauthorized access. safeguard the data and network from network traffic. Fill in the blank.
a. Information
b. Hardware
c. Software
d. Network
Answer :- For Answer Click Here
3. Locky is an example of which type of cybersecurity threat?
a. Ransomware
b. Malware
c. Phishing
d. All of the above
Answer :-
4. What does C represent in the CIA-Triad in cybersecurity?
a. Cyber-physical
b. Centralized
c. Confidentiality
d. Critical
Answer :-
5. What is ubiquitous sensing in loT?
a. In lloT, sensors and actuators are used to control critical elements.
b. In loT, sensors and actuators are used almost everywhere to control, enhance and optimize various functions.
c. In loT, advanced analytics helps to enhance the working condition, increase machine life and optimize operational efficiency.
d. None of the above
Answer :-
6. Which of the following is a data integration challenge in deploying loT?
a. Understanding the generated data for analysis and application in business.
b. Storing the data
c. Lack of skills
d. Cybersecurity
Answer :-
7. Commercialization and the mass production of steam engines marked the beginning of the________ stage of the Industrial revolution. Fill in the blank.
a. Fourth
b. Third
c. Second
d. First
Answer :-
8. What were the negative effects of Industrial revolution?
a. Harm to environment by waste products
b. Inefficient
c. Bad working environment
d. All of the above
Answer :-
9. How many key elements are there in the Industrial internet?
a. 4
b. 3
C. 5
d. 2
Answer :-
10. How does sensing contributes to the industry?
a. Increase downtime
b. Increase cost
c. Higher degree of automation
d. Safety hazards
Answer :-
11. A smart sensor can perform multiple sensing, unlike the traditional sensors. True or false?
a. True
b. False
Answer :- For Answer Click Here
12. What is self-decision making in a smart sensor?
a. It can self-monitor its operation and changes in the ambience by taking proper decision by itself.
b. Reduce the cost by reduced downtime
c. Communicate data
d. Enable multiple parameter sensing
Answer :-
13. What is the full form of SCADA?
a. Supervisory Confidential and Data Acquisition
b. Supervisory Control and Data Acquisition
c. Smart Control and Data Acquisition
d. Smart Controlled and Direct Acquisition
Answer :-
14. What does the Cognitive layer in the 5C architecture for Cyber-physical Systems represents?
a. System for supervised control: Self-configure, Self-Optimize, Self-Adjust
b. Sensor records machine health data: data to information interpretation
c. System for optimized decision: Human-readable interpretation & data visualization
d. All of the above
Answer :-
15. How can smart factory be beneficial in inventory tracking?
a. Global inter-connectivity of smart factory facilitates real-time updates of nventory
b. Ease of process re-adjustment facility
c. End-to-end production line management with sensors
d. None of the above
Answer :-
NPTEL Introduction To Industry 4.0 And Industrial Internet Of Things Week 3 Assignment Answers 2023
1. What is the full form of CPS?
a. Central-Physical System
b. Cyber-Physical System
c. Cyber-Property System
d.Central-Private System
Answer :-
2. Select the statements) that best describes a CPS.
a. A CPS interacts with the physical world through sensors and actuators.
b. A CPS is a network of physical and computational components.
c. It is a set of multiple networked embedded systems.
d. All of the above
Answer :- For Answer Click Here
3. What does conversion refer to in context of CPS architecture for loT?
a. Conversion of CPS into individual components.
b. Conversion of machine data to meaningful information.
c. Conversion of present data into future data prediction.
d. Conversion of analog signal to digital signal.
Answer :-
4. Select the statement which describes one of the limitations of smart sensors.
a. Sensor data aggregation not possible.
b. Cannot connect with an actuator.
Cannot connect to a network
d. All of the above
Answer :-
5. ______sensors are capable of processing sensed data and performing pre-defined functions by processing data. Fill in the blank with the appropriate option.
a. Smart
b. Intelligent
c. Digital
d. Scalar
Answer :-
6. Which of the following allows application-specific customization of sensor nodes?
a. Smart sensors
b. Intelligent sensors
c. ADC
d. None of the above
Answer :- For Answer Click Here
7. ________allows employees to share information and solve business problems. Fill in the blank.
a. Sharing platform
b. Business platform
c. E-Commerce platform
d. Collaboration platform
Answer :-
8. Coordination is one of the four keys that enable collaboration productivity. How can one initiate coordination?
a. Provide authority to decision-makers in a decentralized system.
b. Format data model to store every data element exactly once.
c. Bridge the gap between the virtual and physical world.
d. All of the above
Answer :-
9. How many components are there in PLM that are used to handle a product across its lifetime?
a. 3
b. 5
c. 7
d. 9
Answer :-
10. Which of the following statements is true about Augmented reality?
a. It is a mixture of interactive hardware and software-based artificial environment.
b. It creates and enhances an imaginary reality.
c. It amplifies the present perception of reality.
d. All of the above
Answer :-
11. What is proiection-based AR?
a. It gives outcomes by projecting light on real world surfaces.
b. It substitutes the original view with of an object with the augmented view.
c. It gives the output when a marker is detected.
d. It is used for GPS-denied regions
Answer :-
12. Semi-immersive simulation is a type of
a. AR
b. VR
c. Both a and b
d. None of the above
Answer :-
13. Which of the following search methods is used by a computer program that does not use artificial intelligence?
a. Heuristic
b. Algorithmic
c. Approximation
d. None of the above
Answer :-
14. Select the correct statement.
a. Artificial intelligence is a type of machine learning
b. Deep learning is a subset of machine learning
c. Deep learning cannot learn the features on its own.
d. Machine learning is a subset of deep learning.
Answer :-
15. Which of the following statements is true about the GFS file system?
a. It is based on the Hadoop Distributed File System
b. It is a distributed file system that supports large-scale file system
c. It is a centralized file management system
d. It is a file system designed specifically for unstructured data management
Answer :-
NPTEL Introduction To Industry 4.0 And Industrial Internet Of Things Week 2 Assignment Answers 2023
1. Which of the following is a feature of the Fourth industrial revolution?
a. Use of Mainframes and the Internet
b. Mass production
c. Utilization of machines in production processes
d. Use of Al ML, and CPS
Answer :- d. Use of Al ML, and CPS
2. ___________has helped in producing objects that are mutable and adaptable. Fill in the blank.
a. Digital fabrication
b. Additive manufacturing
c. Synthetic biology
d. None of the above
Answer :- a. Digital fabrication
3. Select the option that best describes the tipping point.
a. Radical change in the future that leads to innovation
b. Change that leads to failing economy
C. A point which marks the profit in business
d. A space in factory floor for goods collection
Answer :- a. Radical change in the future that leads to innovation
4. Which of the following is/are drivers of sustainability in Industry 4.0?
a. Globalization
b. Socio-economic factors
c. Environmental factors
d. All of the above
Answer :- d. All of the above
5. Information regulation in public is covered under which of the following laws?
a. Employment and Labor rules
b. Advertisement regulations
c. Environmental rules
d. Privacy regulation
Answer :- b. Advertisement regulations
6. How does population growth affect the manufacturing industry?
a. It affects the food supplies
b. It affects the availability of industrial locations
c. It affects the political actions and outcomes
d. All of the above
Answer :- d. All of the above
7. Which of the following statements is true about recession?
a. Recession is the extremity of depression
b. Recession stavs for only two months
C. Recession is observable on GDP of a country
d. All of the above
Answer :- C. Recession is observable on GDP of a country
8. The lean manufacturing system, introduced by Toyoto, is based on which of the following approaches?
a. JIDOKA
b. JIT
c. Both a and b
d. SUDOKA
Answer :- c. Both a and b
9. Which of the following is not an impact of the Lean production system on manufacturing?
a. Highest lead time
b. Low cost
c. High quality
d. All of the above
Answer :- a. Highest lead time
10. What is KPI in the context of performance management?
a. Key Product Index
b. Key Performance Indicator
c. Key Performance Index
d. Key Product Identifier
Answer :- b. Key Performance Indicator
11. Which of the following statements is/are true about smart and connected products?
a. Smart and connected products are cheaper
b. Decrease environmental impact
C. Improves recall process of products
d. All of the above
Answer :- d. All of the above
12. Lock-in centric business models helps in
a. Preventing customer migration
b. Eliminating errors
c. Making faster transactions
d. Creating new market for innovative product
Answer :- a. Preventing customer migration
13. What is the function of the digital layer in a smart business architecture?
a. Data storage
b. Data analysis
c. Data processing
d. All of the above
Answer :- d. All of the above
14. Which of the following is not a characteristic of a smart factory?
a. Proactivity
b. Agility
c. Opaque
d. Optimization
Answer :- c. Opaque
15. Which of the following falls under the Agility characteristic of a smart factory?
a. Predicting future challenges
b. Real-time tracking
c. Connected smart devices
d. Self-configuration
Answer :- d. Self-configuration
NPTEL Introduction To Industry 4.0 And Industrial Internet Of Things Week 1 Assignment Answers 2023
1. Which of the following is/are not a type of transducer?
a. Speaker
b. Microphone
c. Solar panel
d. Connecting wire
Answer :- d. Connecting wire A transducer is a device that converts one form of energy into another. It can convert electrical signals to physical quantities or vice versa. Here's a brief explanation of the options:
2. “Sensor is sensitive to only the measured property. It is insensitive to any other property besides what it is designed to detect.” True or false?
a. True
b. False
Answer :- a. True The statement is true. A sensor is a device that is designed to detect and measure a specific physical property or condition. It is engineered to be sensitive to that particular property and is designed to be insensitive to other properties or environmental factors that are not relevant to its intended purpose. This ensures that the sensor provides accurate and reliable measurements of the property it is designed to detect.
3. sensors produce an output proportional to the magnitude of the quantity being measured.” Fill in the blank
a. Scalar
b. Vector
c. Analog
d. Digital
Answer :- a. Scalar
4. What is the resolution of a sensor?
a. It provides the difference between the measured value and the actual value of the sensing parameter.
b. It provides the smallest change in the input that a sensor is capable of sensing.
c. It provides the incremental changes produced in response by the system.
d. All of the above.
Answer :- b. It provides the smallest change in the input that a sensor is capable of sensing. The resolution of a sensor refers to the smallest change in the input that the sensor can detect and measure. It indicates the smallest incremental change in the sensed quantity that can be observed in the sensor's output. Options a and c are not accurate definitions of sensor resolution. Option d is incorrect because it includes options a and c, which are not correct definitions of sensor resolution.
5. is a part of the system that deals with the control actions required in the system.
a. Sensor
b. Actuator
c. Manager
d. None of the above
Answer :- b. Actuator An actuator is a part of the system that is responsible for carrying out control actions based on the information provided by sensors. It takes control signals from the system's controller or manager and converts them into physical actions or responses to affect the system's behavior. The actuator is the component that executes the commands or adjustments needed to achieve the desired control objectives in the system. Option b, "Actuator," correctly describes the part of the system that deals with control actions.
6. What is the function of an electric rotary actuator?
a. Converts mechanical energy into electrical energy
b. Converts analog signals to digital signals
C. Converts electrical energy into rotational motion
d. All of the above
Answer :- C. Converts electrical energy into rotational motion The function of an electric rotary actuator is to convert electrical energy into rotational motion. It is an electromechanical device that takes electrical signals as inputs and uses them to drive a rotating shaft or output element. By converting electrical energy into rotational motion, electric rotary actuators are used in various applications where precise and controlled rotational movements are required.
7. Which of the following communication standards provide a framework for WAN?
a. 6LowPan
b. IEEE 802.15.4
c. Z- wave
d. Wireless HART
Answer :- b. IEEE 802.15.4
8. The IEEE 802.15.4 standard uses DSSS scheme for data transmission. What does DSSS stand for?
a. Double Spread Spectrum Scheme
b. Direct-Sequence Spread Spectrum
C. Discrete-Sequence Spread Spectrum
d. Dynamic-Sequence Spread Spectrum
Answer :- b. Direct-Sequence Spread Spectrum DSSS stands for Direct-Sequence Spread Spectrum. It is a modulation technique used in wireless communication systems, including the IEEE 802.15.4 standard. In DSSS, the data to be transmitted is spread over a wider bandwidth using a spreading code, which helps in improving the resistance to interference and multipath fading. The receiver uses the same spreading code to despread the received signal and recover the original data.
9. When does Zigbee uses the OQPSK modulation scheme?
a. When the operating frequency is less the 2.4 GHz
b. When the operating frequency is more than 2.4 GHz
c. When the operating frequency is 2.4 GHz
d. All of the above
Answer :- c. When the operating frequency is 2.4 GHz Zigbee uses the OQPSK (Offset Quadrature Phase-Shift Keying) modulation scheme when the operating frequency is 2.4 GHz. The IEEE 802.15.4 standard, which Zigbee is based on, specifies the use of the 2.4 GHz ISM (Industrial, Scientific, and Medical) band for communication. OQPSK is the modulation scheme employed in this frequency band for Zigbee communication to achieve robust and reliable data transmission in low-power, short-range wireless networks.
10 . Which of the following statements is true about the end devices in Zigbee protocol?
a. End devices do not participate in data routing
b. End device manages and controls the network
c. End devices contribute in data relaying
d. There can be only one end device in a Zigbee network
Answer :- a. End devices do not participate in data routing The statement that is true about end devices in the Zigbee protocol is that "end devices do not participate in data routing." In Zigbee networks, end devices are usually battery-powered and have limited resources, so they are designed to conserve energy by not engaging in data routing or network management tasks. Instead, end devices communicate directly with the Zigbee coordinator or through intermediate routers to send or receive data in a Zigbee network. Routers and the Zigbee coordinator handle the data routing and network management functions in the network. Option a correctly describes the role of end devices in the Zigbee protocol.
11. What is the maximum packet size supported by IEEE 802.15.4 standard?
a. 1280 bytes
b. 125 bytes
C. 127 bytes
d. 256 bytes
Answer :- c. 127 bytes The maximum packet size supported by the IEEE 802.15.4 standard is 127 bytes. This includes the data payload, frame headers, and other control information. The small packet size is one of the features designed to make IEEE 802.15.4 suitable for low-power, low-data-rate wireless communication in applications like wireless sensor networks and industrial monitoring systems.
12. Z-wave uses ___________network topology. Fill in the blank.
a. Bus
b. Star
C. Tree
d. Mesh
Answer :- d. Mesh Z-wave uses a mesh network topology. In a mesh network, each device (node) can communicate directly with other nodes within its wireless range, and data can be relayed through intermediate nodes to reach devices that are beyond the direct communication range. This creates a self-healing and redundant network, providing robust and reliable communication between devices in a Z-wave network.
13. Passive tags in RFID are powered by their own power source. True or False?
a. True
b. False
Answer :- b. False Passive tags in RFID (Radio Frequency Identification) are not powered by their own power source. They do not have an internal power source such as a battery. Instead, passive RFID tags are powered by the radio frequency energy emitted by the RFID reader. When the RFID reader sends out a radio frequency signal, the passive tag uses the energy from that signal to power itself momentarily and respond with its data to the reader. Since passive tags do not have their own power source, they are generally smaller, cheaper, and have a longer lifespan compared to active RFID tags that do have their own power source.
14. What is the full form of IETF in the context of the Internet?
a. Internet Enforced Task Force
b. Internet for Engineers Task Force
c. Internet Engineers Task Force
d. Internet Engineering Task Force
Answer :- d. Internet Engineering Task Force IETF stands for Internet Engineering Task Force. It is an open, international community of network designers, operators, vendors, and researchers involved in the evolution and operation of the Internet. The IETF is responsible for developing and promoting Internet standards, protocols, and technologies through collaborative working groups and discussions.
15. MOTT works on ______framework on top of TCP/IP. Fill in the blank.
a. Push Pull
b. Publish Subscribe
c. Client/Server
d. None of the above
Answer :- b. Publish Subscribe
