Production Engineering And Robotics (17609)
Rayat Shikshan Sanstha’s
Karmaveer Bhaurao Patil Polytechnic, Satara
MODEL ANSWER PAPER
CLASS TEST - 1
Sub :- Production Engineering and Robotics Paper Code :- 17609
Q.No.1 / Attempt any three of the following / Marks ( 3*3 = 9)a) / Productivity index: productivity index = output/input. Various sources are utilized for production like labour, raw
material, machine etc. accordingly productivity is called as labour productivity , raw material productivity , machine
productivity etc.
a. Productivity of labour = Productivity in standard hours/actual man hours
b. Productivity of raw material = numbers of units produced/material cost
c. Productivity of machines = output in standard hours /actual machine hours. / 01 Marks For Each Definition
b) / Symptoms of Bad Layout are as follows
1) Some machines are heavily loaded and some are
idle or long periods.
2) Long production cycles.
3) Bottlenecks in production
4) Stock control difficulties.
5) Poor house keeping
6) Idle workers & equipments.
7) Obstacles in material flow.
8) Backtracking
9) Delays in delivery
10) Excessive handling / Any 6 Points ½ mark each
c) / S.N. / Design Principles / Description
1 / Principle of Integration / All the plant facilities should be fully integrated into a single operating unit to achieve maximum efficiency and minimum cost of production.
2 / Principle of Minimum Distance / Best plant layout is the one in which men and materials have to move minimum distance between operations.
3 / Principle of Space Utilization / Best plant should utilize all the available space in most economic and effective manner.
4 / Principle of Flow / Best plant layout is one which results in smooth and continuous flow as per the sequence of operations.
5 / Principle of Flexibility / A flexible plat layout is one in which facilities can be rearranged at a minimum cost and least inconvenience.
6 / Principle of Safety, Security and Satisfaction / Best plant layout is one which makes work satisfying, pleasant, convenient and safer for workers.
7 / Principle of Minimum Investment / Available facilities should be utilized in an optimum manner so as to result in minimum initial capital investment
/ 1/2 Marks for correct description of each design principle
d) / Types of Production system.
1. Intermittent production
a. Job order production system: Examples - Repair shops, fabricators, Special purpose machine manufacturer industries, Civil works etc.
b. Batch order production system: Examples - Cloth manufacturer, Furniture manufacturer, Chemical plant, Heavy vehicles manufacturer industries etc.
2. Continuous production
a. Mass production system: Examples – Manufacturing industries of metal screws, plastic products, pens, assembly line of automobile, T. V. Sets, Electric fan etc.
b. Process production: Examples – Sugar industry, Steel industry, Cement industry, Paper industry etc. / (Each type with example 1 Mark)
Q.No.2 / Attempt any two of the following / Marks ( 4*2 = 8)
a) / Factors to be considered while making ‘site selection’ for new industry/plant:
1. Availability of raw material: As far as possible the site selected should be near the source of raw materials so that cost of transportation can be minimized and storing cost can be reduced especially when the raw material is heavy and bulky or cheap but looses a good amount of weight during processing. For example most of the iron and steel industries are situated in Orissa and Bihar, Paper industries in Ballarpur due to availability of raw material in these areas.
2. Availability of labour: Available of right kind of labour in required numbers of reasonable rates is also deciding factor in site selection. Unskilled labours are amply available at major industrial areas and rural areas but however firms requiring skilled labour be situated near the urban industrial area.
3. Climatic condition: Climatic conditions largely affect certain production processes and also the efficiency of employees. For example textile industries required moist climate due to which these types of industries are situated near Ahmadabad and Mumbai; similarly Tea and Coffee near Assam.
4. Proximity of market: Market is another important factor affecting site selection. Industrial units using raw material should be located near the markets to serve the customer with minimum service cost.
5. Transport and communication facilities: While selecting the site, adequate transportation facilities should be considered. The optimum site is the site which is well connected by various modes of transportation.
6. Availability of water: Water is required for drinking and sanitary purpose of all industries. Therefore, clean and adequate water should be available near the site.
7. Availability of power and fuel: All industries require power and fuel to run the prime movers. Therefore, the site selected should have these facilities available at cheaper rate.
8. Legal Aspects: Local bye laws, taxes etc. are also important because they directly reflect in total cost. So while selection, it should also consider legal aspects. / Any Eight Factors with explanation 04 marks
b) / Layout of Two Wheeler Service Station:
[1] The major factors considered for service station, is an impact of location on sales and services and customer satisfaction.
[2] Customers usually look about how close a service facility is, particularly if the process requires considerable customer contact.
[3] Hence, service facility layouts should provide for easy entrance to these facilities from the freeways.
[4] Well-organized packing areas, easily accessible facilities, well designed walkways and parking areas are some of the requirements of service facility layout.
[5] Service facility layout will be designed based on degree of customer contact and the service needed by a customer. [6] These service layouts follow conventional layouts as required.
Considering all this parameters, in a two wheeler service station, Product Layout is adopted, where the activities for servicing a vehicle follows a sequence of operation irrespective of the type of vehicle.
The use of Product Layout in two wheeler service station is justified in the following circumstances:
[1] The Product layout designed according to a process separate line for each product is considered.
[2] As production flow is permanently in the form of product line, automatic or special purpose machines are used.
[3] A specialized team of plant maintenance staff will look after the repair and maintenance of machines.
[4] A Product Layout (also called a Flow Shop Layout) is one in which equipment or work processes are arranged according to the progressive steps by which the product is made. The path for each part is, in effect, a straight line.
All this parameters fulfilled by the two wheeler service station, so that the two wheeler service layout is lies in category of Product Layout.
/ 2 Marks for Justification of the statement, 2 Marks for Suitable Labeled Layout
c) / Types of AGV
1. Wire guided AGVs: These AGVs follow as inductive wire as guided path.
2. AGVs having optical/chemical/magnetic guide path: These AGVs use a strip of optical/chemical/magnetic material on
their guide path.
3. Dead reckoning AGVs: These AGVs are based on the principle of odometry. These use memory in their on board
microcomputer for their movement.
4. Free ranging AGVs: Unlike wired AGVs the free ranging AGVs does not follow any physical guided path. Path of
these AGVs is not fixed but can be altered by using software program. The guidance of such AGVs is based on
following techniques:
a. Position reference beacons and
b. Optical imaging of surrounding and stereoscopic vision.
Functions: ( Any 2 Points- 2 Marks.)
1. To carry load from one location to other in an automated work place, in predetermined path.
2. To select its own route/path to reach the destination without the human intervention for guidance or control.
3. It may facilities the effective implementation of MIS (manufacturing information system.)
4. AGV system can be easily interfaced with other modules of flexible manufacturing system such as robot, automatic
storage and retrieval system etc.
Applications: (Any 2 applications- 2 marks.)
1. Assembly line operation.
2. Used in Flexible Manufacturing system and Computer integrated manufacturing system.
3. Non industrial applications like hospitals, offices etc. / (4 Types with appropriate explanation- 4Marks)
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Production Engineering And Robotics (17609)
Q.No.3 / Attempt any one of the following / Marks ( 8*1 = 8)a) / / Enlist any one Application of Each, 2 Marks for each Equipment
b) / / Logical Description of operations -4M
Format of Operation sheet -2M
Logical selection of material, Tools, Machines –2M
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