This set of CIM Multiple Choice Questions & Answers (MCQs) focuses on “Types and Levels of Automation System”.
1. Which of the following is not a type of automation?
a) Fixed automation
b) Flexible automation
c) Numerical automation
d) Programmable automation
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Explanation: Automation may be classified into fixed automation, programmable automation, and flexible automation. The decision to implement a particular type of automation depends mainly on the production volume and product variety.
2. Fixed automation is suitable for which type of production?
a) Mass production
b) Batch production
c) Customised production
d) Job production
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Explanation: In fixed automation, the production rate is high, and the initial investment is also high. Thus, it is suitable for mass production. The high initial investment cost spreads over a large number of units in case of mass production.
3. Which of the following is not a feature of programmable automation?
a) Lower production rates than fixed automation
b) Inflexible to deal with variations in product design
c) Reprogrammable
d) Use general purpose equipment
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Explanation: In programmable automation, the program of instructions can be changed to follow the different sequences of operation. Numerical control machine tools, programmable logic controllers, etc. are examples of programmable automation.
4. Programmable automation is suitable for which type of industry?
a) Batch production
b) Food processing
c) Job production
d) Mass production
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Explanation: Batch production involves a change in product configuration after manufacturing a certain quantity of products. The system must be reprogrammed to produce a new batch. Physical set up of machines also need to be changed.
5. An industry which produces bearings for the automobile should implement which type of automation?
a) Programmable automation
b) Flexible automation
c) Fixed automation
d) No automation
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Explanation: Bearings are standardized components. These are produced in large quantities with no variations in their design. Fixed automation is appropriate for mass production of bearings, canned goods, and similar products manufactured in bulk.
6. Which of the following is a feature of flexible automation?
a) Unable to deal with variations in product configuration
b) Use Numerical Control machine tools
c) Similar to fixed automation
d) Flexibility to deal with product design
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Explanation: There is no requirement of a batch in flexible automation. A flexible automation system can produce mixes of product configurations continuously. There is no loss in production time for the changeover.
7. Which of the following is the lowest level of automation hierarchy?
a) Machine level
b) Device level
c) Plant level
d) Cell level
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Explanation: Automation at the device level involves hardware components like actuators, sensors, etc. Device-level, machine level, cell or system level, plant level, and enterprise-level are the various levels of automation.
8. A powered conveyor is an example of which level of automation?
a) Plant level
b) Enterprise level
c) Device level
d) Machine level
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Explanation: Control functions at the machine level involve sequential execution of the program of instructions. CNC machine tools, powered conveyors, industrial robots, automated guided vehicles, etc. are examples of machine-level automation.
9. Which of the following is the highest level of automation?
a) Enterprise level
b) Plant level
c) Device level
d) Machine level
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Explanation: Enterprise level of automation consists of the corporate information system. Functions at this level include marketing, sales, accounting, design, research, planning, master production scheduling, etc.
10. Process planning, shop floor control, quality control are the functions of cell/system-level automation.
a) True
b) False
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Explanation: Order processing, process planning, inventory control, shop floor control, material requirement planning, and purchasing are the functions at the plant level. Cell or system-level functions involve part dispatching, loading, collecting and evaluating inspection data.
11. A manufacturing cell consists of actuators, sensors, and other hardware components.
a) True
b) False
View Answer
Explanation: A manufacturing cell is a group of machines connected by the material handling system, computer, and other equipment. Actuators, sensors, and other hardware are parts of device-level automation.
Sanfoundry Global Education & Learning Series – CIM.
To practice all areas of CIM, here is complete set of Multiple Choice Questions and Answers.
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