Exam Details
Subject | Strength of Materials | |
Paper | ||
Exam / Course | B.Tech in Aerospace Engineering (BTAE) | |
Department | School of Engineering & Technology (SOET) | |
Organization | indira gandhi national open university | |
Position | ||
Exam Date | June, 2016 | |
City, State | new delhi, |
Question Paper
Draw a neat sketch of Stress -Strain curve for a mild steel specimen in tension. Mark the salient points on it.
Derive the relationship between Young's modulus and Bulk modulus of a material.
2. A 1·5 m long steel bar has a uniform diameter of 40 mm for a length of 1 m and in the next 0·5 its diameter gradually reduces to 20 mm. Determine the elongation of the bar when subjected to an axial tensile load of 160 kN. Take E =200 GPa.
3. A flat bar of aluminium alloy, 24 mm wide and 6 mm thick, is placed between steel bars each 24 mm wide and 9 mm thick to form a composite bar (24 x 24 mm) as shown in the figure below. The three bars are fastened together at the ends when the temperature is 10°C. Find the stresses in each of the materials, when the temperature of the whole assembly is raised to 50°C. If at the new temperature, a compressive load of 20 kN is applied to the composite bar, what are the final stresses in steel and aluminium
E x 10^5 Ea x 10^5
<img src='./qimages/10495-3.jpg'>
Derive the relationship between intensity of load, shear force and bending moment.
Show that the maximum bending moment in a beam subjected to UDL throughout is wl^2/8 with usual notations.
5. Draw the SFD and BMD for the beam shown in the figure below:
<img src='./qimages/10495-5.jpg'>
Explain the term 'beam of uniform strength' with the help of neat sketches.
Determine the slope and deflection of a cantilever beam subjected to clockwise moment at its free end.
7. Determine the deflection at B and D for the beam shown in the figure below. Assume E 210 GPa and I 1·6 X 10^7 mm^4.
<img src='./qimages/10495-7.jpg'>
Write Euler's formula for maximum stress for an initially bent column. What are the factors on which deflection of a spring beam depend?
The vertical shear action on a channel section is 3 kN. Find the shear centre of the section as shown in the figure below. Assume constant thickness of 10 mm throughout the section and I 1·21 x 10^8 mm^4.
<img src='./qimages/10495-8b.jpg'>
All dimensions are in mm.
Define any two of the following:
Buckling load and Slenderness ratio
Neutral axis and Section modulus
Flexural rigidity and Modulus of rupture
What are the limitations of Euler's formula?
10. Derive the expression for the theory of pure torsion, with usual notations.
Derive the relationship between Young's modulus and Bulk modulus of a material.
2. A 1·5 m long steel bar has a uniform diameter of 40 mm for a length of 1 m and in the next 0·5 its diameter gradually reduces to 20 mm. Determine the elongation of the bar when subjected to an axial tensile load of 160 kN. Take E =200 GPa.
3. A flat bar of aluminium alloy, 24 mm wide and 6 mm thick, is placed between steel bars each 24 mm wide and 9 mm thick to form a composite bar (24 x 24 mm) as shown in the figure below. The three bars are fastened together at the ends when the temperature is 10°C. Find the stresses in each of the materials, when the temperature of the whole assembly is raised to 50°C. If at the new temperature, a compressive load of 20 kN is applied to the composite bar, what are the final stresses in steel and aluminium
E x 10^5 Ea x 10^5
<img src='./qimages/10495-3.jpg'>
Derive the relationship between intensity of load, shear force and bending moment.
Show that the maximum bending moment in a beam subjected to UDL throughout is wl^2/8 with usual notations.
5. Draw the SFD and BMD for the beam shown in the figure below:
<img src='./qimages/10495-5.jpg'>
Explain the term 'beam of uniform strength' with the help of neat sketches.
Determine the slope and deflection of a cantilever beam subjected to clockwise moment at its free end.
7. Determine the deflection at B and D for the beam shown in the figure below. Assume E 210 GPa and I 1·6 X 10^7 mm^4.
<img src='./qimages/10495-7.jpg'>
Write Euler's formula for maximum stress for an initially bent column. What are the factors on which deflection of a spring beam depend?
The vertical shear action on a channel section is 3 kN. Find the shear centre of the section as shown in the figure below. Assume constant thickness of 10 mm throughout the section and I 1·21 x 10^8 mm^4.
<img src='./qimages/10495-8b.jpg'>
All dimensions are in mm.
Define any two of the following:
Buckling load and Slenderness ratio
Neutral axis and Section modulus
Flexural rigidity and Modulus of rupture
What are the limitations of Euler's formula?
10. Derive the expression for the theory of pure torsion, with usual notations.
Other Question Papers
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Subjects
- Aerodynamics- I
- Aerodynamics- II
- Aircraft Design/Launch Vehicle/ Rocket Design
- Aircraft Instruments
- Aircraft Safety and Maintenance Engineering
- Aircraft Structures
- Aircraft Systems And Airworthiness Requirements
- Applied Chemistry
- Applied Physics
- Basic Control Theory
- CNS-ATM system
- Composite Materials
- Computer Fundamentals
- Engineering Drawing
- Environmental Science
- Flight Mechanics
- High Speed Aerodynamics
- Instruction To Computer Play Device
- Introduction to Aeronautics
- Introduction To Rocket And Missiles
- Mechanics Design
- Propulsion- I
- Propulsion- II
- Rocket Propulsion
- Space Dynamics
- Strength of Materials
- Technical Writing and Communication Skills
- Workshop Technology