Exam Details
| Subject | Design of Machine Elements | |
| 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 | December, 2015 | |
| City, State | new delhi, |
Question Paper
1. Choose the correct answer:
TheH6-j5,H7-j6andH8-j7arethe
Clearance fits
Transition fits
Iriterference fits
All of the above are correct
The factor of safety increases with an increase in
Load
Reliability
Cost
Quality
The polar moment of inertia of a solid circular shaft of diameter is given by
J
nd^3/32
nd^4/32
nd/32
The spring index is given by
C
C
C Do
Width to diameter ratio of a flat key is given by
b
d
b
d
To calculate the shaft diameter of bushed pin type flexible coupling, the following formula is used:
t =16Mt/nd^3
t =8Mt/nd^3
t 32 Mt/nd^3
t=64/nd^3
The application of a knuckle joint
Fulcrum for the levers
Joints between the tie bars in roof trusses
Joints between the links of a bicycle chain
All the above
2. What is the basic procedure in machine design Explain in brief.
3. Write short notes on the following:
Types, functions and applications of springs
End styles of springs
4. The cylinder of a 4-stroke diesel engine has the following specifications Brake power =3·75 kW, Speed =1000 rpm Indicated mean effective pressure 0·35 MPa and Mechanical efficiency Determine the diameter and length of the cylinder liner.
5. A rigid coupling is used to transmit 20 kW power at 720 rpm. There are four bolts and the pitch circle diameter of the bolts is 125 mm. The bolts are made of steel 45C8 (Syt 380 and the factor of safety is 3. Determine the diameter of the bolts.
6. A 25 x 50 mm bar of rectangular cross-section is made of plain carbon steel 40C8 (Syt 380
N/mm^2 and E 2,07,000 The length of the bar is 500 mm. The two ends of the bar are hinged and the factor of safety is 2·5. The bar is subjected to axial compressive force.
Determine Slenderness ratio.
What is the safe compressive force for the bar?
7. Explain the modified Goodman diagram for Axial and Bending stresses.
8. Write short notes on any four of the following:
Design Synthesis and Creativity in Design
Limits, Fits and Tolerances
Types of Keys
Rankine Buckling Load
Morgan's Colour Code
ASME Code for Shaft Design
TheH6-j5,H7-j6andH8-j7arethe
Clearance fits
Transition fits
Iriterference fits
All of the above are correct
The factor of safety increases with an increase in
Load
Reliability
Cost
Quality
The polar moment of inertia of a solid circular shaft of diameter is given by
J
nd^3/32
nd^4/32
nd/32
The spring index is given by
C
C
C Do
Width to diameter ratio of a flat key is given by
b
d
b
d
To calculate the shaft diameter of bushed pin type flexible coupling, the following formula is used:
t =16Mt/nd^3
t =8Mt/nd^3
t 32 Mt/nd^3
t=64/nd^3
The application of a knuckle joint
Fulcrum for the levers
Joints between the tie bars in roof trusses
Joints between the links of a bicycle chain
All the above
2. What is the basic procedure in machine design Explain in brief.
3. Write short notes on the following:
Types, functions and applications of springs
End styles of springs
4. The cylinder of a 4-stroke diesel engine has the following specifications Brake power =3·75 kW, Speed =1000 rpm Indicated mean effective pressure 0·35 MPa and Mechanical efficiency Determine the diameter and length of the cylinder liner.
5. A rigid coupling is used to transmit 20 kW power at 720 rpm. There are four bolts and the pitch circle diameter of the bolts is 125 mm. The bolts are made of steel 45C8 (Syt 380 and the factor of safety is 3. Determine the diameter of the bolts.
6. A 25 x 50 mm bar of rectangular cross-section is made of plain carbon steel 40C8 (Syt 380
N/mm^2 and E 2,07,000 The length of the bar is 500 mm. The two ends of the bar are hinged and the factor of safety is 2·5. The bar is subjected to axial compressive force.
Determine Slenderness ratio.
What is the safe compressive force for the bar?
7. Explain the modified Goodman diagram for Axial and Bending stresses.
8. Write short notes on any four of the following:
Design Synthesis and Creativity in Design
Limits, Fits and Tolerances
Types of Keys
Rankine Buckling Load
Morgan's Colour Code
ASME Code for Shaft Design
Other Question Papers
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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.