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, 2016 | |
| City, State | new delhi, |
Question Paper
No. of Printed Pages: 5 IBME-050 1
DIPLOMA IN MECHANICAL ENGINEERING
(DME)IDMEVI
Term-End Examination
December, 2016
ClCI5:i.2 BME-050 ENGINEERING MATERIALS Time hours Maximum Marks: 70
Note: Question number 1 is compulsory. Attempt any four questions out of the remaining questions numbered 2 to 6. Use of calculator is permitted.
1. Select the correct answer from the given alternatives for each part given below: 14 x 1=14
The Knoop Hardness Number is
Wh
P/d^2C
Pd^2/C
V/Wh
The tensile strength of Grey Cast Iron is
825 MPa
205 MPa
165 MPa
100 MPa
The fracture that occurs without any appreciable plastic deformation is
Brittle fracture
Ductile fracture
Creep
Malleable fracture
The tangent of the shear angle, that results from an applied shear load is
Shear stress
Shear strain
Residual stress
True strain
Which of the following materials is not used for making Drills, Taps, Knives, etc.
High carbon steel
Mild steel
Tool steel
H.S. steel
The steels which contain carbon between 0.25% and 0.55% are
Low carbon steel
Mild steel
Medium carbon steel
High carbon steel
The tensile strength of pure iron is around (in
350
300
250
200
The more convenient laboratory test for hardenability is
Jominy Test
Cylinder Series Test
Charpy Test
Izod Test
Annealing is done by heating ferritic steel to a temperature of
770°C
870°C
970°C
1070°C
Aluminium alloy has/is
High density
Low density
Toxic
Poor electrical conductivity
The alloy of Tin, Copper, Lead and Antimony is
Bronze
Babbit
Brass
Monel metal
A mixture of particles of Cementite (Fe3C) in a Ferrite matrix is
Bainite
Martensite
Spheroidite
Pearlite
A gas used in the manufacture of synthetic rubber is
Hydrogen
Butadiene
Nitrogen
Beryllium
Diffusion of silicon into solid metal, usually steel, at an elevated temperature is
Nitriding
Siliconizing
Silicon diffusion
Anodizing
2. Explain Universal Testing Machine with diagram.
How does strain rate influence Yield strength, Ultimate tensile strength and Percent elongation? 2x7=14
3. Describe Induction Type Electric Furnace with diagram.
What are the applications of Low, Medium and High carbon steels? 2x7=14
4. What is martensite and how is it formed
Explain the process of 'Normalising'. 2x7=14
5. How is the cast iron classified
Write the applications of magnesium and its alloys. 2x7=14
6. Write short notes on the following: 2x7=14
Natural Polymers
Adhesive Bonding
DIPLOMA IN MECHANICAL ENGINEERING
(DME)IDMEVI
Term-End Examination
December, 2016
ClCI5:i.2 BME-050 ENGINEERING MATERIALS Time hours Maximum Marks: 70
Note: Question number 1 is compulsory. Attempt any four questions out of the remaining questions numbered 2 to 6. Use of calculator is permitted.
1. Select the correct answer from the given alternatives for each part given below: 14 x 1=14
The Knoop Hardness Number is
Wh
P/d^2C
Pd^2/C
V/Wh
The tensile strength of Grey Cast Iron is
825 MPa
205 MPa
165 MPa
100 MPa
The fracture that occurs without any appreciable plastic deformation is
Brittle fracture
Ductile fracture
Creep
Malleable fracture
The tangent of the shear angle, that results from an applied shear load is
Shear stress
Shear strain
Residual stress
True strain
Which of the following materials is not used for making Drills, Taps, Knives, etc.
High carbon steel
Mild steel
Tool steel
H.S. steel
The steels which contain carbon between 0.25% and 0.55% are
Low carbon steel
Mild steel
Medium carbon steel
High carbon steel
The tensile strength of pure iron is around (in
350
300
250
200
The more convenient laboratory test for hardenability is
Jominy Test
Cylinder Series Test
Charpy Test
Izod Test
Annealing is done by heating ferritic steel to a temperature of
770°C
870°C
970°C
1070°C
Aluminium alloy has/is
High density
Low density
Toxic
Poor electrical conductivity
The alloy of Tin, Copper, Lead and Antimony is
Bronze
Babbit
Brass
Monel metal
A mixture of particles of Cementite (Fe3C) in a Ferrite matrix is
Bainite
Martensite
Spheroidite
Pearlite
A gas used in the manufacture of synthetic rubber is
Hydrogen
Butadiene
Nitrogen
Beryllium
Diffusion of silicon into solid metal, usually steel, at an elevated temperature is
Nitriding
Siliconizing
Silicon diffusion
Anodizing
2. Explain Universal Testing Machine with diagram.
How does strain rate influence Yield strength, Ultimate tensile strength and Percent elongation? 2x7=14
3. Describe Induction Type Electric Furnace with diagram.
What are the applications of Low, Medium and High carbon steels? 2x7=14
4. What is martensite and how is it formed
Explain the process of 'Normalising'. 2x7=14
5. How is the cast iron classified
Write the applications of magnesium and its alloys. 2x7=14
6. Write short notes on the following: 2x7=14
Natural Polymers
Adhesive Bonding
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