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✅ Subject: Introduction To Industry 4.0 And IOT
📅 Week: 6
🎯 Session: NPTEL 2025
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Introduction To Industry 4.0 And Industrial Internet Of Things Week 6 NPTEL Assignment Answers 2025
1. Which industrial communication technology is suitable for hazardous environments?
a. ModBus-TCP
b. EtherCat
c. Profibus PA
d. TSN
Answer :- c
2. Which type of modem allows simultaneous bi-directional communication?
a. Simplex
b. Half-duplex
c. Duplex
d. Synchronous
Answer :- c
3. Which of the following industrial communication protocols follow a clientserver architecture?
a. MECHATROLINK
b. ModBus-TCP
c. Hostlink
d. DeviceNet
Answer :- For Answers Click Here
4. What type of tasks is enabled by Smallcell Deployment in cellular networks?
a. Increasing dead zones
b. Alleviating backhaul burden and reducing latency
c. Limiting energy efficiency
d. Eliminating spectrum flexibility
Answer :-
5. The DS1621 temperature sensor generates how many bits of temperature data?
a. 8 bits
b. 9 bits
c. 10 bits
d. 12 bits
Answer :- For Answers Click Here
6. Which of the following sensors is used to measure acceleration and provides 3-axis (X, Y, Z) values?
a. TCS3200
b. LM35
c. MQ-2
d. ADXL335
Answer :-
7. Which sensor is used for detecting human presence based on infrared radiation?
a. Image sensor
b. Ultrasonic sensor
c. PIR sensor
d. Magnetostrictive sensor
Answer :-
8. In an MOS gas sensor, what happens to the resistance in an n-type sensor when exposed to a reducing gas?
a. Resistance remains the same
b. Resistance decreases
c. Resistance increases
d. Resistance fluctuates randomly
Answer :-
9. Which of the following characteristics describes a gas sensor’s ability to detect a specific gas in the presence of other gases?
a. Sensitivity
b. Stability
c. Selectivity
d. Reversibility
Answer :-
10. What is the maximum data transmission range for EtherCat using optical waveguides?
a. 100 meters
b. 500 meters
c. 10 kilometers
d. 20 kilometers
Answer :- For Answers Click Here
11. Which communication protocol uses Common Industrial Protocol (CIP) over Ethernet?
a. EtherNet/IP
b. Profinet
c. EtherCat
d. Modbus-TCP
Answer :-
12. What is the total bus length supported by Interbus?
a. 7 kilometers
b. 10 kilometers
c. 13 kilometers
d. 24n−2 meters, where n is the number of slaves
Answer :-
13. Which of the following is a key requirement for Industrial communication?
a. High latency communication
b. Manual device control
c. Single-band connectivity
d. Very low latency
Answer :-
14. How are sensors categorized based on their power requirements?
a. Active and Passive
b. Analog and Digital
c. Load Resistive and Load Reactive
d. Battery-Powered and Line-Powered
Answer :-
15. Modbus is an industrial communication protocol for Fieldbuses that follows a master-slave architecture. What is the maximum number of slave devices supported by the master node in this protocol?
a. 128
b. 247
c. 256
d. 494
Answer :- For Answers Click Here
Introduction To Industry 4.0 And Industrial Internet Of Things Week 6 NPTEL Assignment Answers 2024
1. Which of the following is one of the benefits of sensor usage in industry?
a. Increasing downtime due to routine maintenance
b. Reduced manual intervention for sensing in hazardous areas
c. Manual data entry
d. Limited operational efficiency
Answer :- b
2. Ultrasonic sensors can be used for_______________ Fill in the blank.
a. Object detection
b. Distance measurement
c. Dynamic body detection
d. All of the above
Answer :- d
3. Which sensor can be used for distance measurement, pattern matching, color checking,
structured lighting, and motion capture?
a. Acceleration sensor
b. PIR Sensor
c. Ultrasonic sensor
d. Image sensor
Answer :- d
Introduction To Internet Of Things Week 6 NPTEL Assignment Answers
4. What is another name for MOS gas sensors?
a. Electro-Resistive Gas sensors
b. Chemi-Resistive Gas sensors
c. Photo-Resistive Gas sensors
d. Thermo-Resistive Gas sensors
Answer :- b
5. What is the ‘Optimum Temperature’ in the context of MOS gas sensors?
a. The temperature at which the sensor does not respond
b. The temperature at which the sensor gives the best response
c. The lowest temperature at which the sensor operates
d. The highest temperature the sensor can withstand
Answer :- b
6. What happens to the resistance of a gas sensor when it detects Volatile Organic Compounds (VOCs)?
a. The resistance remains constant
b. The resistance changes from its baseline resistance
c. The resistance increases only
d. The resistance decreases only
Answer :- b
7. What are the typical requirements for industrial communication?
a. High duty-cycle, high latency, high jitter
b. Real-time, very low duty-cycle, very low latency, very low jitter
c. Manual data processing, high latency, low duty-cycle
d. High duty-cycle, low latency, high jitter
Answer :- b
8. What is the range of data transmission rate for EtherCat?
a. 10 Mbps
b. 100 Mbps
c. 1 Gbps
d. 200 Mbps
Answer :- d
9. Which topology is the EtherNet/IP standard based on?
a. Universal Serial Bus topology
b. Active star topology
c. Passive bus topology
d. Hybrid ring topology
Answer :- b
10. Which Profibus variant handles communication between PCs and Programmable Logic Controllers?
a. Profibus DP
b. Profibus PA
c. Profibus FMS
d. Profibus MBP
Answer :- c
11. Which Profibus variant is suitable for hazardous environments?
a. Profibus DP
b. Profibus PA
c. Profibus FMS
d. Profibus MBP
Answer :- b
12. Which network topology does the Interbus use?
a. Active Ring Topology
b. Bus Topology
c. Mesh Topology
d. Star Topology
Answer :- a
13. What is the latency supported by Tactile Internet?
a. < 1 ms round trip latency
b. 10-20 ms round trip latency
c. 50-100 ms round trip latency
d. 200-500 ms round trip latency
Answer :- a
14. Which frequency band does the 5G NR use for high-band communication?
a. <1 GHz
b. 1-6 GHz
c. >24 GHz
d. 10-20 GHz
Answer :- c
15. What are the three components of the Modbus architecture?
a. Modbus Node, Modbus Junction, Modbus Branch
b. Modbus Client, Modbus Router, Modbus Server
c. Modbus Publisher, Modbus Broker, Modbus Subscribers
d. Modbus Master, Modbus Gateway, Modbus Slaves
Answer :- d
Conclusion:
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