JNTU
JNTU B.Tech IV AUTOMATION IN MANUFACTURING Previous Question Paper (July - 2019 - R15)
Note: This question paper contains two parts A and B. 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, c as sub questions.
Part A
What are the reasons for automation.
Answer
Automation is implemented to increase labor productivity, reduce labor costs, mitigate the effects of labor shortages, improve product quality, and enhance safety by removing workers from hazardous environments.
What are the components used in hydraulic circuits with automation?
Answer
Key components include hydraulic power units (pumps and motors), control valves (pressure, flow, and directional control valves), actuators (cylinders and hydraulic motors), fluid reservoirs, filters, and piping/hoses for fluid transmission.
Discuss the term ‘Blocking of stations’ used in the automated flow lines.
Answer
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What are the advantages of the continuous transfer mechanisms?
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Define the term ‘Total work content’.
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Explain the term ‘precedence constraint’ in line balancing.
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Write a short note on storage structure of an AS/RS.
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What are the problems encountered in the control of AS/RS operation.
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What are the advantages of hydraulic actuation systems?
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Compare open and closed loop control systems.
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Part B
What are the different types automation? Discuss them briefly.
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What are the important mechanical feeding devices used in automated systems? Discuss them briefly.
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Discuss the following automation strategies: i. Combined Operations ii. On-line inspection iii. Plant Operation Control iv. Process Control and Optimization.
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Discuss the reasons for implementation of automated systems in the manufacturing industries.
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Explain the differences between intermittent transfer mechanism and power-and-free transfer mechanism.
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What is ‘partial automation’ and what are the reasons for the existence of partially automated production lines in the shop floors?
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Define the following terms used in automated flow lines and write the mathematical expressions for each term: i. Production Time ii. Theoretical Production Rate
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Briefly discuss on the efficiency of an automated flow lines with storage buffer.
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What are the three major processes used to accomplish the assembly of the components? Explain briefly.
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Enumerate the differences between flexible assembly lines and manual assembly lines.
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The following list defines the precedence relationships and element times for a new model toy: Element Te(min) Immediate predecessors 1 1 – 2 0.6 1 3 1.6 1 4 0.4 2 5 0.2 2 6 1.2 3 7 0.8 4,5 8 1 3,5 9 0.6 7,8 10 1.2 6,9. Determine the assignment of work elements to stations using the Largest-Candidate rule. Also determine:
How many stations are required?
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Compute the balance delay.
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Discuss the following factors in materials handling equipment: i) Routing ii) Scheduling.
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Describe the following Automated Guided Vehicle System with the help of simple sketch: i) Pallet Trucks ii) Driverless Trains.
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Explain the following terms used in the analysis of vehicle based system: i) Traffic factor ii) Worker Efficiency
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Explain the configuration and control features of carousel storage systems.
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Explain any three sensors used for temperature measurement.
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Explain Enterprise Resource planning logic in detail.
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Explain the principle of various sensors used for measuring displacement.
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Define ‘Business Process Reengineering’. Discuss how the Business Process Reengineering tool will enhance the performance of companies.
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