Exam Details
| Subject | Engineering Materials | |
| Paper | ||
| Exam / Course | Diploma in Mechanical Engineering | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2015 | |
| City, State | new delhi, |
Question Paper
1. Define any seven of the following:
Toughness
Elastic limit and Proportional limit In ductile materials
Charpy Impact Test
Continuous Casting
Plain carbon steels and its applications
Tempering
Age-Hardening of Aluminium Alloys
Refractoriness
Natural Polymers
Distinguish between proportional limit and elastic limit. Which one is higher in stress strain diagram obtained from tensile test of a mild steel specimen
A steel specimen of 12 mm diameter and 60 mm gauge length was tested in tension and the following observations were recorded:
Load at upper yield point =20900 N
Load at lower yield point =19850 N
Maximum load =36000 N
Gauge length after fracture =63 mm
Calculate the modulus of resilience, modulus of toughness and of elongation, if E 210 x 10^3 N/mm^2 .
Distinguish between killed and semi-killed steels.
Explain Annealing process.
Describe the following phases in iron-carbon phase diagram
Pearlite
Ferrite
Cementite
Austentite
Leduberite
What is quenching? Why should quenched steel be tempered? Discuss.
Describe the properties and uses of carborundum.
Describe different methods of manufacturing ceramics.
What are the advantages and limitations of adhesive bonded joints?
What are the different types of mechanical cleaning processes used for the cleaning of casting?
Toughness
Elastic limit and Proportional limit In ductile materials
Charpy Impact Test
Continuous Casting
Plain carbon steels and its applications
Tempering
Age-Hardening of Aluminium Alloys
Refractoriness
Natural Polymers
Distinguish between proportional limit and elastic limit. Which one is higher in stress strain diagram obtained from tensile test of a mild steel specimen
A steel specimen of 12 mm diameter and 60 mm gauge length was tested in tension and the following observations were recorded:
Load at upper yield point =20900 N
Load at lower yield point =19850 N
Maximum load =36000 N
Gauge length after fracture =63 mm
Calculate the modulus of resilience, modulus of toughness and of elongation, if E 210 x 10^3 N/mm^2 .
Distinguish between killed and semi-killed steels.
Explain Annealing process.
Describe the following phases in iron-carbon phase diagram
Pearlite
Ferrite
Cementite
Austentite
Leduberite
What is quenching? Why should quenched steel be tempered? Discuss.
Describe the properties and uses of carborundum.
Describe different methods of manufacturing ceramics.
What are the advantages and limitations of adhesive bonded joints?
What are the different types of mechanical cleaning processes used for the cleaning of casting?
Other Question Papers
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Subjects
- Applied Thermal Engineering
- Automobile Engineering
- Basics of Thermal Energy
- CAD / CAM
- CNC Machanics
- Computer Integrated Manufacturing
- Engineering Materials
- Machine Design
- Manufacturing Processes-I
- Manufacturing Processes-II
- Manufacturing Processes-III
- Metrology and Instrumentation
- Power Plant Engineering
- Theory of Machine