Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech IV INDUSTRIAL AUTOMATION Previous Question Paper (December - 2019 - R16)
Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
Write the advantages and disadvantages of automation.
Answer
Advantages: Increased productivity, improved product quality, and enhanced safety by removing humans from hazardous environments. Disadvantages: High initial capital investment, potential for job displacement, and increased complexity in maintenance and troubleshooting.
Explain concept of hierarchy of automation.
Answer
The hierarchy of automation, often represented by the CIM pyramid, organizes industrial control into levels: Level 0 (Field/Sensors/Actuators), Level 1 (Control/PLC/DCS), Level 2 (Supervisory/SCADA), Level 3 (Manufacturing Execution Systems), and Level 4 (Enterprise/ERP). This structure ensures data flows from the shop floor to management, allowing for integrated decision-making.
Draw ladder diagram using switches, relays and coils.
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List different programming languages used with PLC.
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What is the role of RTU in SCADA system?
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List different editors used in SCADA.
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Write down any four advantages of DCS over centralized control system.
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What are all the factors to be considered in selecting DCS?
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What are the applications of Internet of Things (IoT) in Industrial Automation?
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What is OLE for Process Control (OPC)?
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Part B
Explain the principle of operation of discrete AC input and output modules used in PLC with suitable diagrams.
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Compare various types of PLCs used in Industry.
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Develop a ladder program for Traffic light control system with following conditions: a) Red light ON for 30 sec, b) Green light ON for 25 sec, and c) Yellow light ON for 05 sec. d) Repeat the sequence until stop push button is pressed.
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Write a PLC ladder diagram for following motor sequence: a) START button starts motor M1. b) After 10 sec M1 is OFF and M2 is ON. c) After 5 sec motor M2 is OFF. d) STOP push button stops M1, M2, if pressed any time during process.
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Draw and explain SCADA hardware architecture.
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Explain about Communication architecture and SCADA protocols.
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Explain about any one case study of DCS in detail.
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What are the different types of communication technologies used in DCS? Explain.
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Compare Hybrid, central computer system and DCS architectures.
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Mention about some of the DCS manufacturers available in market. Explain about their salient features.
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Discuss about the importance of OPC in Industrial Automation.
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What is the Impact of Cloud based applications on Industrial Automation? Explain.
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