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, 2015 | |
| City, State | new delhi, |
Question Paper
What are True Stress and True Strain?
Find the maximum tensile load of a test specimen whose strength coefficient and maximum true strain were found by a test as 449·35 N/mm^2 and 0·3077 respectively. The original cross-sectional area of the specimen was 128·6144 mm^2 . Also determine the ultimate tensile strength of the specimen.
What is Fatigue Discuss the mechanism of Fatigue failure of a metal.
A 10 kN load is lifted by a steel wire rope 2 m long. What diameter of the rope should be selected, if the permissible stress is not to exceed 100 x 106 N/m2 Find the elongation of the rope. Take Young's modulus as 200 kN/mm^2
Define heat treatment process. What do we achieve by carrying out heat treatment?
What are the critical temperatures of steel Explain the difference and significance of upper and lower critical temperatures of steel.
Describe the process of decomposition of austenite in carbon alloyed steel with diagram.
What is surface hardness of steel? How is it carried out? What are its applications?
What is Tempering Briefly describe the process of tempering.
Explain how properties of steel are changed by tempering at progressively high temperature.
State the chemical composition, mechanical properties and uses of the following alloys:
Duralumin
Y-alloy
Discuss how carbon content in steel influences its mechanical properties.
7. A specimen of an alloy 25 mm in diameter and 200 mm gauge length is tested to destruction. It has an extension of 0.16 mm under a load of 80 kN and the load at the elastic limit is 160 kN. Maximum load is 180 kN. Total extension at fracture is 56 mm and neck diameter is 18 mm.
Determine the following:
Young's Modulus
Stress at elastic limit
Percentage elongation
Percentage reduction in area
Ultimate Tensile Stress
Find the maximum tensile load of a test specimen whose strength coefficient and maximum true strain were found by a test as 449·35 N/mm^2 and 0·3077 respectively. The original cross-sectional area of the specimen was 128·6144 mm^2 . Also determine the ultimate tensile strength of the specimen.
What is Fatigue Discuss the mechanism of Fatigue failure of a metal.
A 10 kN load is lifted by a steel wire rope 2 m long. What diameter of the rope should be selected, if the permissible stress is not to exceed 100 x 106 N/m2 Find the elongation of the rope. Take Young's modulus as 200 kN/mm^2
Define heat treatment process. What do we achieve by carrying out heat treatment?
What are the critical temperatures of steel Explain the difference and significance of upper and lower critical temperatures of steel.
Describe the process of decomposition of austenite in carbon alloyed steel with diagram.
What is surface hardness of steel? How is it carried out? What are its applications?
What is Tempering Briefly describe the process of tempering.
Explain how properties of steel are changed by tempering at progressively high temperature.
State the chemical composition, mechanical properties and uses of the following alloys:
Duralumin
Y-alloy
Discuss how carbon content in steel influences its mechanical properties.
7. A specimen of an alloy 25 mm in diameter and 200 mm gauge length is tested to destruction. It has an extension of 0.16 mm under a load of 80 kN and the load at the elastic limit is 160 kN. Maximum load is 180 kN. Total extension at fracture is 56 mm and neck diameter is 18 mm.
Determine the following:
Young's Modulus
Stress at elastic limit
Percentage elongation
Percentage reduction in area
Ultimate Tensile Stress
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