Exam Details
| Subject | Production Technology - Ii | |
| Paper | ||
| Exam / Course | Diploma in Mechanical Engineering (DMEVI)& B.Tech. MECHANICAL ENGINEERING 1-4 (BTMEVI) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2015 | |
| City, State | new delhi, |
Question Paper
Explain briefly the parts of a lathe. How is the size of a lathe specified
A 150 mm long, 12 mm diameter rod is reduced to 11 mm diameter in a single pass straight turning. If the spindle speed is 400 rpm and feed rate is 200 mm/min, determine the material removal rate and cutting time.
Explain the following terms in relation to a lathe:
Cutting speed
Feed
Depth of cut
Threading
Knurling
Forming
Reaming
Determine the time required to machine a workpiece 170 mm long, 60 mm diameter to 165 mm length, 50 mm diameter. The workpiece rotates at 440 rpm, feed is 0·3 mm/rev and maximum depth of cut is 2 mm. Assume total approach and overtravel distance as 5 mm for turning operation.
Why should the cutting edge and top face of the tool be given a high finish
The following data relate to a metal cutting test conducted on a lathe:
Vertical force on the tool =2,000
Depth of cut =3·0 mm;
Feed cuts/mm;
Overall efficiency of the machine
Determine:
Pressure (in of the cross-sectional area on the tool. chip
Power required for cutting the material.
Why are rake and clearance angles provided on cutting tools and on what factors do the values of these angles depend?
A cast iron plate measuring 300 mm x 100 mm x 40 mm is to be rough shaped along its wider face. Calculate the machining time taking.
approach =25 mm,
overtravel =25 mm,
cutting speed =12 m/min,
return speed =20 m/min,
allowance on either side of the plate width mm, and feed per cycle mm.
What is grinding wheel and why is better surface finish obtained when this is used as a tool Explain.
What are the advantages, limitations and applications of broaching?
How are shapers classified? Explain briefly with a neat sketch, the principal parts of a shaper.
A workpiece of 300 mm diameter and 600 mm length is to be turned down to 282 mm for the entire length. The suggested feed is 1·2 mm/revolution and the cutting speed is 162 m/min. The maximum allowable depth of cut is 4·5 mm. Calculate the following:
Spindle rpm
Feed speed
Material removal rate
Cutting time
Assume tool overtravel is 12·0 mm. Neglect tool approach.
How are drilling machines classified Explain briefly the radial drilling machine with the help of a neat sketch.
Calculate the time taken to face a workpiece of 80 mm diameter. The spindle speed is 90 rpm and cross feed is 0·3 mm/revolution.
Discuss the applications of milling machines.
Enumerate the reasons for popularity of CNC controlled production machine tools.
A 150 mm long, 12 mm diameter rod is reduced to 11 mm diameter in a single pass straight turning. If the spindle speed is 400 rpm and feed rate is 200 mm/min, determine the material removal rate and cutting time.
Explain the following terms in relation to a lathe:
Cutting speed
Feed
Depth of cut
Threading
Knurling
Forming
Reaming
Determine the time required to machine a workpiece 170 mm long, 60 mm diameter to 165 mm length, 50 mm diameter. The workpiece rotates at 440 rpm, feed is 0·3 mm/rev and maximum depth of cut is 2 mm. Assume total approach and overtravel distance as 5 mm for turning operation.
Why should the cutting edge and top face of the tool be given a high finish
The following data relate to a metal cutting test conducted on a lathe:
Vertical force on the tool =2,000
Depth of cut =3·0 mm;
Feed cuts/mm;
Overall efficiency of the machine
Determine:
Pressure (in of the cross-sectional area on the tool. chip
Power required for cutting the material.
Why are rake and clearance angles provided on cutting tools and on what factors do the values of these angles depend?
A cast iron plate measuring 300 mm x 100 mm x 40 mm is to be rough shaped along its wider face. Calculate the machining time taking.
approach =25 mm,
overtravel =25 mm,
cutting speed =12 m/min,
return speed =20 m/min,
allowance on either side of the plate width mm, and feed per cycle mm.
What is grinding wheel and why is better surface finish obtained when this is used as a tool Explain.
What are the advantages, limitations and applications of broaching?
How are shapers classified? Explain briefly with a neat sketch, the principal parts of a shaper.
A workpiece of 300 mm diameter and 600 mm length is to be turned down to 282 mm for the entire length. The suggested feed is 1·2 mm/revolution and the cutting speed is 162 m/min. The maximum allowable depth of cut is 4·5 mm. Calculate the following:
Spindle rpm
Feed speed
Material removal rate
Cutting time
Assume tool overtravel is 12·0 mm. Neglect tool approach.
How are drilling machines classified Explain briefly the radial drilling machine with the help of a neat sketch.
Calculate the time taken to face a workpiece of 80 mm diameter. The spindle speed is 90 rpm and cross feed is 0·3 mm/revolution.
Discuss the applications of milling machines.
Enumerate the reasons for popularity of CNC controlled production machine tools.
Other Question Papers
Departments
- Centre for Corporate Education, Training & Consultancy (CCETC)
- Centre for Corporate Education, Training & Consultancy (CCETC)
- National Centre for Disability Studies (NCDS)
- School of Agriculture (SOA)
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- School of Continuing Education (SOCE)
- School of Education (SOE)
- School of Engineering & Technology (SOET)
- School of Extension and Development Studies (SOEDS)
- School of Foreign Languages (SOFL)
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Subjects
- Advanced Dynamics Of Machine
- Automobile Engineering
- Combustion Engineering
- Computer Aided Manufacturing
- Computing Aided Design
- Design of Machine Elements
- Engineering Metallurgy
- Engineering Thermodynamics
- Experimental Stress Analysis
- Finite Element Analysis
- Fluid Mechanics
- Heat And Mass Transfer
- Heat Transfer
- I.C. Engines
- Industrial Engineering
- Industrial Ergonomics
- Industrial Measurement And Quality Control
- Industrial Organization And Management
- Kinematics and Dynamics of Machines
- Machine Design - I
- Machine Design-Ii
- Machine Drawing
- Machines Tools
- Maintenance Engineering
- Material Science
- Materials Handling
- Mechanical System Design
- Mechanical Vibration
- Mechanics Of Materials
- Mechatronics
- Metrology
- Metrology And Quality Control
- Non-Conventional Energy Resources
- Non-Destructive Testing
- Nuclear Power Engineering
- Optimisation Techniques In Engineering
- Optimization For Engineering Design
- Power Plant Engineering
- Power Transmitting Elements
- Product Development And Design
- Production And Operations Management
- Production Technology - Ii
- Production Technology-I
- Refrigeration And Air Conditioning
- Refrigeration System
- Robotics
- Safety Engineering
- Technical Entrepreneurship
- Thermal Engineering
- Thermal Engineering - I
- Thermofluid Engineering
- Total Quality Management (Tqm)
- Tribology
- Turbo Machines
- Unconventional Manufacturing Processes
- Welding Engg.