2010 Jawaharlal Nehru Technological University, Hyderabad Code No: R05210103 R05 Set No. 1 II B.Tech I Semester Supplementary Examinations,June 2010 STRENGTH OF MATERIALS-I Question paper
Code No: R05210103 R05 Set No. 1
II B.Tech I Semester Supplementary Examinations,June 2010
STRENGTH OF MATERIALS-I
Civil Engineering
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. A Cantilever of length L carries a uniformly distributed load of w per unit run over
the whole length. If the free end be supported over a rigid prop, nd the reaction
of the prop and sketch S.F and B.M diagrams. Find also the maximum detection.
[16]
2. Define point of contra flexure. Draw S.FD. & B. M. D for the beam shown in Figure
6 and locate the point of contra flexure. [16]
Figure 6
3. A uniform metal bar of 1.5 m length, area of section 600 mm2 has an elastic limit
of 160 N / mm2. Find its proof resilience, if E = 200 Gpa . Find also the max.
applied load which can be suddenly applied without exceeding the elastic limit.
Calculate the magnitude of the gradually applied load which will produce the same
extension. [16]
4. What do you understand by section-modulus? Obtain the dimensions of the strongest
rectangular section that can be cut from a circular log of wood of 30 cm dia. [16]
5. Determine the changes in length, width and thickness of a steel bar 50 mm long,
25 mm wide and 15 mm thick if it is subjected to an axial pull of 40 kN. Take E =
200 GPa and Poisson?s ratio = 0.3. [16]
6. A compound tube is formed by shrinking a hollow cylinder of 150mm external
dia. over another hollow cylinder of 130mm internal dia. if the dia. at the common
surface is 144mm, calculate the radial pressure at the common surface. The original
di erence in dia. is 8mm. Take E = 200KN=mm2. [16]
7. A beam supports a maximum bending moment of 60 KNm at a section on span. The
cross section dimensions are b = 230 mm, d = 400 mm. Calculate the maximum
bending stresses. [16]
8. Define the terms
(a) Circumferential stress
(b) Longitudinal stress and derive the expressions for the same in thin cylinders.
KEYWORDS:JNTU STRENGTH OF MATERIALS,JNTU STRENGTH OF MATERIALS QUESTION PAPER,JNTU,JNTU QUESTION PAPER,JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD SUPPLEMENTARY EXAMINATIONS JUNE JNTU STRENGTH OF MATERIALS
Code No: R05210103 R05 Set No. 1
II B.Tech I Semester Supplementary Examinations,June 2010
STRENGTH OF MATERIALS-I
Civil Engineering
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. A Cantilever of length L carries a uniformly distributed load of w per unit run over
the whole length. If the free end be supported over a rigid prop, nd the reaction
of the prop and sketch S.F and B.M diagrams. Find also the maximum detection.
[16]
2. Define point of contra flexure. Draw S.FD. & B. M. D for the beam shown in Figure
6 and locate the point of contra flexure. [16]
Figure 6
3. A uniform metal bar of 1.5 m length, area of section 600 mm2 has an elastic limit
of 160 N / mm2. Find its proof resilience, if E = 200 Gpa . Find also the max.
applied load which can be suddenly applied without exceeding the elastic limit.
Calculate the magnitude of the gradually applied load which will produce the same
extension. [16]
4. What do you understand by section-modulus? Obtain the dimensions of the strongest
rectangular section that can be cut from a circular log of wood of 30 cm dia. [16]
5. Determine the changes in length, width and thickness of a steel bar 50 mm long,
25 mm wide and 15 mm thick if it is subjected to an axial pull of 40 kN. Take E =
200 GPa and Poisson?s ratio = 0.3. [16]
6. A compound tube is formed by shrinking a hollow cylinder of 150mm external
dia. over another hollow cylinder of 130mm internal dia. if the dia. at the common
surface is 144mm, calculate the radial pressure at the common surface. The original
di erence in dia. is 8mm. Take E = 200KN=mm2. [16]
7. A beam supports a maximum bending moment of 60 KNm at a section on span. The
cross section dimensions are b = 230 mm, d = 400 mm. Calculate the maximum
bending stresses. [16]
8. Define the terms
(a) Circumferential stress
(b) Longitudinal stress and derive the expressions for the same in thin cylinders.
KEYWORDS:JNTU STRENGTH OF MATERIALS,JNTU STRENGTH OF MATERIALS QUESTION PAPER,JNTU,JNTU QUESTION PAPER,JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD SUPPLEMENTARY EXAMINATIONS JUNE JNTU STRENGTH OF MATERIALS