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R.C.TECHNICAL INSTITUTE, AHMEDABAD
Subject Name & Code : Estimating Costing and Contracting (3351905)
ASSIGNMENT-1
Q.1. State Need, Scope and importance of Contracting in industries.
Q. 2. List difference between costing and estimating. State need of costing.
Q.3. Explain any one method to calculate depreciation.
Q.4. Catalogue price of Shaper machine is Rs. 50,000. Distributor is given discount of 10%.
Office overhead + sales over head = factory cost, Material cost: Labour cost: Factory
overhead = 1:3:2 & labour cost is = Rs. 9000, find profit on Shaper.
Q.5. One shaft have 20 cm length and its diameter is reduced from 4.2 cm to 4 cm by grinding
process, find time of grinding process by use following data.
Wheel face width = 2 cm, Cutting speed = 16.5 m/min, Depth of cut= 0.25 mm.
Q. 6. Two flat plates each of 200 cm long, 10 cm wide, 1 cm thick are joined in such a way that
a plate of approximate size of 200 cm×20 cm×1 cm size is produced. Neglecting edge
preparation cost, estimate the total material cost of welding.
Assume (1) cost of O2= Rs 1.2/ m3. (2) Cost of C2H2= Rs 6/m3.
(3) Cost of filler material=Rs 3/kg. (4) Consumption of O2=1 m3/hr.
(5) consumption of C2H2=1 m3/hr. (6) filler rod diameter=5mm.
(7) length of filler rod required=4.5m/m weld (8) density of filler rod=9 gm/C.C. and
(9) Welding speed is 2 m/hr.
Q.7. List elements of cost & factors affecting Gas welding.
Q.8. A 20 cm × 6 cm C.I. surface is to be faced on a milling machine with a cutter having 8 cm
diameter and 12 teeth. If the cutting speed and feed are 40 m/min and 4 cm/min
respectively, determine the milling time, R.P.M. of cutter and feed per tooth. Assume over
run is 0.70 cm.
Q.9. Explain any five sheet metal operation with sketch.
Q.10. Define forging. Explain different types of forging losses.
Q.11. What is break even chart? Write its importance, constructing procedure and limitation.
Q.12. Define "Budget" & Budgetary control and Write type of budget and explain any one.
Q.13. Explain documents required for engineering contract.
Q.14. List modern tools & techniques of cost reduction.
Q.15. Define pattern. List and explain different pattern allowance.
Subject Name & Code : Estimating Costing and Contracting (3351905)
ASSIGNMENT-2
Q.1 Define :-(1) Prime Cost, (2) Factory Cost, (3) Production Cost, (4) Market Value,
(5) Book Value, (6) Scrap Value, (7) Salvage Value.
Q.2 List and explain different elements of cost.
Q.3 One company have 100 product in one batch and selling overhead
cost is 40% of factory cost, if factory want to 20 % of profit so Find
the selling price per product by use following data.
Direct material cost = Rs.500, Direct labour cost = Rs.700, Factory
overheads = Rs.800.
Q.4 A square bar of 4cm side and 40 cm length is to be converted by hand forging
into bar of hexagonal cross section having each side equal to 3 cm. calculate
the length of hexagonal bar produced. Consider 6% scale loss of total volume.
Q.5 Explain with sketch effects of changing following parameters on Break
even
point: (i) If fixed cost F decreases (ii) If variable cost V increases
Q.6 Two 4 m long plate is welded by manually flux shielded metal arc
welding
process.Find total welding cost by use following data.
Welding speed-10 m/h, Operating fector-60 %, Labour charge- Rs.15/h,
Use of electrodes-0.4 kg/meter welding length, Electrodes price-
Rs.80/kg,
Arc voltege-22V, Arc Courent-200I, Transformercapacity-60%,
Power charge-Rs.5/KW.
Q.7 Estimate time required to drill 6 holes of 1 cm. diameter in a plate.
Depth of hole = 2 c m. , Cutting speed = 15 mt/min & feed = 0.01
cm/rev.
Q.8 Explain various types of budget in brief.
Q.9 The fixed cost of a company is Rs. 8, 00,000. Selling price of unit is
Rs.500 and variable cost of unit is Rs. 300. Determine total profit and
Safety margin when total production is 18,000 units.
Q.10 Define the terms with unit : cutting speed, feed
Q.11 Define the following terms: (1) Shape weight (2) Net weight
(3) Gross weight (4) Flash loss (5) Shear loss (6) Scale loss (7) Tong
loss
Q.12 Explain terminology used in Machine Shop costing.
Q.13 Define overhead cost. List the different methods of overhead allocation
and explain anyone method.
Q.14 What is pattern allowance? Explain different pattern
allowances.
Q.15 Write types of contract and general conditions of contract.
R.C.TECHNICAL INSTITUTE, AHMEDABAD
ASSIGNMENT-3 SUB: ECC (3351905)
Q.1 Define cost estimating. Explain the importance of cost estimating in industry.
Q.2 Differentiate between estimating and costing. State the quality of
estimator.
Q.3 A tablet producing company is daily producing 120 tablets. Direct material
cost is Rs.s. 180000 and direct labour cost is Rs 120000. Factory overheads are
40% of direct
labour cost. Administrative overheads are 20% of factory cost. Sales and
distribution overheads is 30% of production cost. If the profit per tablet is Rs. 300,
than Find the selling price of one tablet.
Q.4 Define following term according to machine shop:(1) Set up time, (2)
Handling time, (3) Actual machining time, (4) Tear down time, (5)
Miscellaneous allowances time,
(6) Organisational time, (7) Service time.
Q.5 Define the following terms: (1) Shape weight (2) Net weight
(3) Gross weight (4) Flash loss (5) Shear loss (6) Scale loss (7) Tong
loss
Q.6 A cylindrical boiler 2.5m height & 1.2m diameter is made from 15mm thick
plate. Circular ends & cylindrical length is welded. Welding is to be done both
inside & outside. Find the cost of arc welding from the data given below.
Welding speed = 2.5 m/hr outside Labor cost = 15 Rs/hr
Welding speed = 2 m/hr inside Use of power = 4kwh/m weld
Use of electrode = 1.5 m/meter weld Cost of power = 4 Rs/kwh
Wasted electrode= 5% of used electrode Wasted time = 5% of weld time
Cost of electrode = 15Rs/meter Overhead cost = 2times of labor cost
Q.7 Derive Equation to calculate BEP by analytical method.
Q.8 Explain any five sheet metal joints with sketch.
Q.9 Why factory has to earn profit? Explain the procedures to increase
profit.
Q.10 Find the time for surface finish of a job 20cm×20cm size on
shaping machine in two cut. If cutting speed is 10meter/min. and
feed 0.06mm/stroke.
Q.11 Define Overhead allocation .State methods of overhead
allocation and explain unit rate method.
Q.12 The prime cost of 600 laptop bags is 2, 40,000 Rs. Factory
overhead are 40% of prime cost, Administrative overheads is 20%
of FC. For 30% profit, what will be the selling price of one laptop
bag?
Q.13 Explain in brief area of cost reduction.
Q.14 Estimate the time required to shape a keyway 40 cm long,1
cm wide and 0.5 cm deep in a C.I machine part. Assume
1) Cutting speed for shaping = 10 m/min
2) Feed = 0.08 cm /Stroke
3) Depth of cut not to be exceed = 0.25 cm
Q.15 Define and explain any five.
1) E.B.Q. 2) Approach 3) Salvage Value 4) Non Productive Cost 5)
Catalogue price 6) Budget
7) Cost Accounting 8) Specification
R.C.Technical Institute, Sola, Ahmedabad Mechanical Engineering Department
Semester – 5th
Subject Name: INDUSTRIAL ENGG. __________________________________________________________
Assignment 1
SHORT QUESTIONS
1. What is consumer’s risk? 2. Draw the pattern of Trend and Stratification 3. What is reliability? 4. The observations are 4,8,2,3,4,9,8,6.Find mean ,mode and median. 5. Name the types of distribution curve and draw the diagram of any one. 6. Name 4 charts used in method study 7. The observed time20min., rating factor is 1,contingency allowance is 5%
Find the standard time . 8. Draw the Therblig symbols for search, assemble, find and inspect.
DESCRIPTIVE QUESTIONS
1. List the factors influencing productivity
2. State objectives of Industrial Engineering
3. Explain time measuring methods
4. State types of control charts and explain C-chart.
5. State various steps of time study.
6. State objectives of work measurement. EXAMPLES
1. In -R chart upper control limit is 52.50 and is 48.25. If subgroup size is 4, find the Following
(i) Lower control limit of - chart. (ii) Control limits of R-chart. [ constants- A2 =0.729, D3=0, D4= 2.282 ]
2. A batch of 100 products was inspected. Out of which 85 products were found as specification and 15 products were rejected, then what will be the probability of acceptable and rejected products 3. Calculate standard time from following data for one cycle: Loading time = 1.82min. Machining time =6.25min. Unloading time =0.77min. Inspection time =0.56min. Overall rating of the cycle =90%.
Over all allowances =10% of basic time. 4. A worker completes a work element in 0.16 min. If the rating given to him is 125% then calculate the basic time What will be the standard time with 0% allowance. 5. The maximum diameter of the component is25.10 mean 25.05, SD. =0.05.Find how many components will be above maximum limit. The total components manufactured is 500 nos.(For Z=1 A=0.34, Z=2A=0.47,Z=3 A=0.49) Mechanical
R.C.Technical Institute, Sola, Ahmedabad Engineering Department Semester – 5th
Subject Name: Manufacturing Engineering- III
Assignment 2
R.C.Technical Institute, Sola, Ahmedabad Mechanical Engineering Department
Semester – 5th
Subject Name: Manufacturing Engineering- III __________________________________________________________
Assignment 1
1 Explain the need and importance of manufacturing engineering.
2. Describe way of specification for grinding wheel as per IS standard.
3. Define: Cutting speed, feed and depth of cut.
4. What is balancing of grinding wheel? Why balancing is necessary?
5. State different grinding operations and explain any one.
6. Explain: (1) Glazing (2) Dressing (3) Trueing
7. Explain center less grinding with neat sketch.
8. Compare honing, lapping and super finishing processes.
9. Explain tool and cutter grinder.
10. State and explain various types of grinding wheel bonding materials.
R.C.Technical Institute, Sola, Ahmedabad Mechanical Engineering Department
Semester – 5th
Subject Name: Manufacturing Engineering- III
Assignment 2
1. Give classification of Non Conventional methods of machining.
2. Explain Abrasive jet machining (AJM).
3. Explain Ultrasonic machining with neat sketch.
4. Explain working principle of laser beam machining, state
advantages, disadvantages and applications.
5. Explain Electric discharge machining with neat sketch.
6. Classify various methods of gear production.
7. Differentiate between generating and forming processes with
respect to gear manufacturing.
8. Explain gear milling with advantages and disadvantages.
9. Explain gear hobbing process with merits and demerits.
10. List various gear finishing processes with its purpose and explain
any one of them.
R.C.Technical Institute, Sola, Ahmedabad Mechanical Engineering Department
Semester – 5th
Subject Name: SEED __________________________________________________________
Assignment 1
Answer Following
1. Define the Self employment. 2. Write different types of the Enterprise. 3. Define Micro, Small and Medium industries. 4. State four stages of the Product development 5. State at least four factors affecting the process selection. 6. Write different types of the Plant lay out 7. Define the Installed capacity. 8. List 4-P of the Marketing. 9. State the meaning of the project planning. 10. Write four elements of the ‘SWOT’ analysis
R.C.Technical Institute, Sola, Ahmedabad Mechanical Engineering Department
Semester – 5th
Subject Name: SEED __________________________________________________________
Assignment 2
1. State at least six fields of self employment in the
mechanical engineering.
2. State the advantages of self employment.
3. Explain the concept of self employment.
4. State the ways to develop the innovation.
5. Define the term ‘Entrepreneurship’ and give its
characteristics.
6. List at least eight desired qualities of the entrepreneur
7. State the functions of District Industrial Centre (DIC).
8. List the name of different support agencies of the State
and National level.
9. Explain the concept of the Productivity
10. Differentiate between Monopoly and Competition
11. State the name of basic methods of estimation of
production capacity
12. Explain the importance of producibility
13. Explain in short the 7-M Resources.
14. Define the term Marketing and state its importance
15. Explain the following terms used in the financial
management
Primary market Secondary market
16. Write short note on the Feasibility study
17. State different stages of the Project planning
18. Prepare the list of the Details included in the Project
report
19. List external sources of the risks in the enterprise
20. List different methods of Risk management
21. State the advantages of the Case study
22. State the important features of the Case study
23. Write short note on the success criteria of the
business
24. State the factors affecting the Plant Lay out.
R.C.Technical Institute, Sola, Ahmedabad Mechanical Engineering Department
Semester – 5th
Subject Name: THERMAL ENGI9NEERING -II __________________________________________________________
Assignment 1
1 Write equation for thermal efficiency in terms of compression ratio with usual notations for CI and SI engine.
2. Define Mean Effective Pressure (MEP) with mathematical equitation.
3. Give any two SI unit for Mean Effective Pressure with inter relation.
4. Draw theoretical and actual valve timing diagramme for four stroke diesel engine.
5. Draw theoretical and actual valve timing diagramme for four stroke petrol engine.
6. Explain reasons for difference in actual and theoretical valve timing diagramme for petrol engine.
7. Explain reasons for difference in actual and theoretical valve timing diagramme for diesel engine.
8. A CI engine having break power is 25000 Watt, consume fuel 7.0 Kg/hr. Find Indicated Thermal
Efficiency, Break Thermal Efficiency, Break Power and Specific Fuel Consumption based Break
Power. The calorific value of fuel is 22000 KJ/Kg.
9.Following observations are available during trial of four stroke single cylinder SI engine.
Diameter of Cylinder: 300mm Stroke: 500mm Pressure Ratio: 6 Mean Effective Pressure: 8 bar
Speed: 320 rpm Calorific Value of fuel: 21000 KJ/M3 Fuel consumption rate: 0.5 M3/min.
Mechanical Efficiency: 70%
Find (1) Indicated Power (2) Break Power (3) Indicated Thermal
Efficiency (4) Cycle Efficiency (5) Specific Fuel Consumption
based Break Power. 10 Define supercharging and scavenging
11 Write two functions of fuel pump.
12List different evaporator in VCRS and explain any one.
13 Draw schematic diagram of VCRS and state the function of each
component.
14 Differentiate between two stroke and four stroke cycle I.C.Engine.
15 Differentiate between C.I. and S.I. engine.
