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, 2016 | |
| City, State | new delhi, |
Question Paper
1. Select the correct answer from the given four alternative answers:
The ultimate strength of steel in tension in comparison to shear is in the ratio of
1:1
2:1
3:2
2:3
Guest's theory of failure is applicable for the following type of materials:
Brittle
Ductile
Elastic.
Plastic
Tensile strength of a mild steel specimen can roughly be predicted from the following hardness test
Brinell
Rockwell
Vicker
Shore's Scleroscope
The notch angle of the Izod impact test specimen is
10°
20°
30°
45°
Cold working
increases the fatigue strength
decreases the fatigue strength
has no influence on the fatigue strength
None of the above
The function of a washer is to
provide cushioning effect
provide bearing area
absorb shocks and vibrations
provide smooth surface in place of rough surface
Spring index is the
ratio of coil diameter to wire diameter
load required to produce unit deflection
indication of quality of spring
capability of the spring to store energy
2. The piston rod of a steam engine is 50 mm in diameter and 600 mm long. The diameter of the piston is 400 mm and the maximum steam pressure is 0·9 N/mm^2. Find the compression of the piston rod, if E =210 kN/m^2 for the piston rod material.
3. Design a knuckle joint to connect two steel bars under a tensile load of 25 kN. Allowable stresses are 65 MPa in tension, 50 MPa in shear and 83 MPa in crushing.
4. Explain what do you understand by Ergonomics. Elaborate on the importance of ergonomics in respect of design process.
5. A helical spring is made from a wire of 6 mm diameter and has outer diameter (coil) of 75 mm. If the permissible shear stress is 350 MPa and modulus of rigidity is 84 kN/mm2, find the axial load which the spring can carry and the deflection per active turn.
What are fits and tolerances How are they designated?
What is meant by 'hole basis system' and 'shaft basis system' Which one is preferred and why?
Explain how the factor of safety is determined under steady and varying load.
illustrate how the stress concentration in a component can be reduced.
8. Write short notes on the following:
Endurance Limits
Keys and Cotters
Rankine-Gordon's Formula
Buckling in Helical Springs
The ultimate strength of steel in tension in comparison to shear is in the ratio of
1:1
2:1
3:2
2:3
Guest's theory of failure is applicable for the following type of materials:
Brittle
Ductile
Elastic.
Plastic
Tensile strength of a mild steel specimen can roughly be predicted from the following hardness test
Brinell
Rockwell
Vicker
Shore's Scleroscope
The notch angle of the Izod impact test specimen is
10°
20°
30°
45°
Cold working
increases the fatigue strength
decreases the fatigue strength
has no influence on the fatigue strength
None of the above
The function of a washer is to
provide cushioning effect
provide bearing area
absorb shocks and vibrations
provide smooth surface in place of rough surface
Spring index is the
ratio of coil diameter to wire diameter
load required to produce unit deflection
indication of quality of spring
capability of the spring to store energy
2. The piston rod of a steam engine is 50 mm in diameter and 600 mm long. The diameter of the piston is 400 mm and the maximum steam pressure is 0·9 N/mm^2. Find the compression of the piston rod, if E =210 kN/m^2 for the piston rod material.
3. Design a knuckle joint to connect two steel bars under a tensile load of 25 kN. Allowable stresses are 65 MPa in tension, 50 MPa in shear and 83 MPa in crushing.
4. Explain what do you understand by Ergonomics. Elaborate on the importance of ergonomics in respect of design process.
5. A helical spring is made from a wire of 6 mm diameter and has outer diameter (coil) of 75 mm. If the permissible shear stress is 350 MPa and modulus of rigidity is 84 kN/mm2, find the axial load which the spring can carry and the deflection per active turn.
What are fits and tolerances How are they designated?
What is meant by 'hole basis system' and 'shaft basis system' Which one is preferred and why?
Explain how the factor of safety is determined under steady and varying load.
illustrate how the stress concentration in a component can be reduced.
8. Write short notes on the following:
Endurance Limits
Keys and Cotters
Rankine-Gordon's Formula
Buckling in Helical Springs
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.