Exam Details
| Subject | Engineering Materials | |
| Paper | ||
| Exam / Course | Bachelor of Technology in Mechanical Engineering (Computer Integrated Manufacturing) BTME | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2016 | |
| City, State | new delhi, |
Question Paper
A steel specimen of 10 mm diameter and 50 mm gauge length was tested.in tension and the following observations were recorded:
Load at upper yield point =20600 N Load at lower yield point =19650 N Maximum load 35550 N Gauge length after fracture 62·43 mm Calculate the modulus of resilience and modulus of toughness. Also calculate elongation. E 210 x 10^3 N/mm^2.
Describe the procedure for finding Brinell hardness.
Explain killed, semi-killed and rimmed steel.
Describe cooling curve for pure iron. Will this curve change in the presence of impurity?
Describe the properties and uses of carborundum.
Describe the aluminium alloys commonly used for engineering applications. Give their properties and application.
How is rubber obtained and what are the uses of natural rubber?
A composite of glass fibres and epoxy has all fibres laid along the length and is required to carry a stress of 1200 MPa. The limiting stress carried by fibre and epoxy is 2400 MPa and 80 MPa respectively. The volume ratios and modulii of elasticity are described below:
Vf V m Ef 72 GPa, Em =3GPa
The composite is stretched in the direction of fibres.
Find the modulus of elasticity of the composite.
What percentage of broken fibres can be tolerated if matrix is not to be stressed more than 80% of its capacity?
In a fracture test, a 3-point bend specimen of thickness 20 mm and depth 25 mm is supported over a span of 100 mm. The specimen is precracked. The surface occurs at a load of 16513 N and crack length is measured after fracture as 10·25 mm. Calculate KIC from the data.
Describe four types of cracks with the help of suitable examples.
Describe the term lubricant and its functions.
What are the purposes of coatings? Give some applications of coatings.
Distinguish between ductile and brittle materials with the help of suitable examples.
Describe the uses of Molybdenum and its alloys.
How are glass fibres made? Which matrix material suits glass fibres best
Explain the terms tribology and friction.
Load at upper yield point =20600 N Load at lower yield point =19650 N Maximum load 35550 N Gauge length after fracture 62·43 mm Calculate the modulus of resilience and modulus of toughness. Also calculate elongation. E 210 x 10^3 N/mm^2.
Describe the procedure for finding Brinell hardness.
Explain killed, semi-killed and rimmed steel.
Describe cooling curve for pure iron. Will this curve change in the presence of impurity?
Describe the properties and uses of carborundum.
Describe the aluminium alloys commonly used for engineering applications. Give their properties and application.
How is rubber obtained and what are the uses of natural rubber?
A composite of glass fibres and epoxy has all fibres laid along the length and is required to carry a stress of 1200 MPa. The limiting stress carried by fibre and epoxy is 2400 MPa and 80 MPa respectively. The volume ratios and modulii of elasticity are described below:
Vf V m Ef 72 GPa, Em =3GPa
The composite is stretched in the direction of fibres.
Find the modulus of elasticity of the composite.
What percentage of broken fibres can be tolerated if matrix is not to be stressed more than 80% of its capacity?
In a fracture test, a 3-point bend specimen of thickness 20 mm and depth 25 mm is supported over a span of 100 mm. The specimen is precracked. The surface occurs at a load of 16513 N and crack length is measured after fracture as 10·25 mm. Calculate KIC from the data.
Describe four types of cracks with the help of suitable examples.
Describe the term lubricant and its functions.
What are the purposes of coatings? Give some applications of coatings.
Distinguish between ductile and brittle materials with the help of suitable examples.
Describe the uses of Molybdenum and its alloys.
How are glass fibres made? Which matrix material suits glass fibres best
Explain the terms tribology and friction.
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)
- School of Computer and Information Sciences (SOCIS)
- 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)
- School of Gender Development Studies(SOGDS)
- School of Health Science (SOHS)
- School of Humanities (SOH)
- School of Interdisciplinary and Trans-Disciplinary Studies (SOITDS)
- School of Journalism and New Media Studies (SOJNMS)
- School of Law (SOL)
- School of Management Studies (SOMS)
- School of Performing Arts and Visual Arts (SOPVA)
- School of Performing Arts and Visual Arts(SOPVA)
- School of Sciences (SOS)
- School of Social Sciences (SOSS)
- School of Social Work (SOSW)
- School of Tourism & Hospitality Service Sectoral SOMS (SOTHSM)
- School of Tourism &Hospitality Service Sectoral SOMS (SOTHSSM)
- School of Translation Studies and Training (SOTST)
- School of Vocational Education and Training (SOVET)
- Staff Training & Research in Distance Education (STRIDE)
Subjects
- Advanced Manufacturing Technology
- CNC Technology
- Computer Aided Design
- Computer Integrated Manufacturing
- Computer Programmingand Application
- ComputerAided Process Planning
- Condition Monitoringand Maintenance Engineering
- Energy Conversion
- Engineering Materials
- Engineering Mathematics Il
- Engineering Mathematics-I
- Engineering Mechanics
- Engineering Thermodynamics
- Fluid Mechanics
- Heat And Mass Transfer
- Industrial Engineering & Operations Research
- Kinematics & Dynamics of Mechanisms
- Machining Technology
- Manufacturing Systems, Integration and Control
- Manufacturing Technology
- Mechanical Engineering Design
- Mechatronics
- Metrology and Instrumentation
- Principles of Electrical and Electronic Sciences
- Production Management
- Quality Engineering
- Robotics
- Safety Engineering
- Soft Computing in CIM
- Strength of Materials
- Tool Engineering and Management