Unit Test-I CE 6452_2014
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RAJALAKSHMI ENGINEERING COLLEGE, CHENNAI 602 105 DEPARTMENT OF AERONAUTICAL ENGINEERING Unit Test – I Sub Code: CE 6452 Sub Name: Solid Mechanics Date: Maximum Mark:60 Duration: 90 Min Year : 2 Answer All Questions PART A - (15 x 2 = 20 Marks) 1. Explain stress and strain. 2. What is the difference between shearing and tearing? 3. State and explain Hooke’s law. 4. Explain proportional limit and elastic limit. 5. Differentiate between elasticity modulus and rigidity modulus. 6. What is poison’s ratio? 7. Explain working stress and factor of safety. 8. Establish a relation between longitudinal strain and volumetric strain. 9. Explain the various points on the stress-stain curve of an elastic material. 10. What is the difference between uniformly distributed load and uniformly varying load? 11. Explain briefly a bar element. 12. Differentiate pressure and stress. 13. Differentiate between strain and elongation. 14. Explain different types of loadings. 15. What’re the units of stress and pressure in SI system. Answer All Questions PARTB-(2 X 15=30Marks) Question No. 16 is Compulsory Roll NO.
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Transcript of Unit Test-I CE 6452_2014
Roll NO.
RAJALAKSHMI ENGINEERING COLLEGE, CHENNAI 602 105
DEPARTMENT OF AERONAUTICAL ENGINEERINGUnit Test I Sub Code: CE 6452Sub Name: Solid MechanicsDate:
Maximum Mark:60
Duration: 90 Min
Year : 2
Answer All Questions
PART A - (15 x 2 = 20 Marks)
1. Explain stress and strain.
2. What is the difference between shearing and tearing?
3. State and explain Hookes law.
4. Explain proportional limit and elastic limit.
5. Differentiate between elasticity modulus and rigidity modulus.
6. What is poisons ratio?
7. Explain working stress and factor of safety.
8. Establish a relation between longitudinal strain and volumetric strain.
9. Explain the various points on the stress-stain curve of an elastic material.
10. What is the difference between uniformly distributed load and uniformly varying load? 11. Explain briefly a bar element.
12. Differentiate pressure and stress.
13. Differentiate between strain and elongation.14. Explain different types of loadings.
15. Whatre the units of stress and pressure in SI system.
Answer All Questions
PARTB-(2 X 15=30Marks)
Question No. 16 is Compulsory
16. Explain basic classification of stresses with neat sketches and proper live examples. Also briefly explain the types of strains and find the expression for volumetric strain use hydro-static approach.17. (a) A metallic bar 3m long carries a pull of 8 MN. It is 3cm diameter for 90cm length, and 2.8cm diameter for 120cm long and 2.5cm diameter for the remaining 90cm length. Find the total elongation of the bar and the stresses developed in it. E=2X106 N/cm2(OR)
(b) (i) Derive the stress and elongation of a bar which is being influenced by its own weight.
(7)
(ii) A bar having 1000 mm2 cross section area is subjected to axial loads as shown in figure. Find total change in length of the bar. E = 100 MPa
(8)
END
Roll NO.
RAJALAKSHMI ENGINEERING COLLEGE, CHENNAI 602 105
DEPARTMENT OF AERONAUTICAL ENGINEERINGUnit Test I Sub Code: CE 6452Sub Name: Solid MechanicsDate:
Maximum Mark: 60
Duration: 90 Min
Year : 2
Answer All Questions
PART A - (15 x 2 = 30 Marks)
1. Define stress with usual sense.
2. What is strain & explain properly.
3. Differentiate brittle and ductile materials.
4. Correlate pressure and stress.5. What are different types of loads?
6. Explain briefly a bar element.
7. Differentiate pressure and stress.
8. Differentiate between strain and elongation.9. Explain different types of loadings.
10. Whatre the units of stress and pressure in SI system?11. What do you mean by flawed components?
12. Establish a relation between longitudinal strain and volumetric strain.
13. Explain simple shear and complementary shear.
14. Explain gradual, sudden, impact and shock loading.
15. Explain the various points on the stress-stain curve of an elastic material.
Answer All Questions
PARTB-(2 X 15=30Marks)
Question No. 16 is Compulsory16. Derive a relation between E, K, G and with neat explanations with sketch.17. (a) A straight bar of steel 3m long has rectangular section which varies uniformly from 10cm x 12mm at one end to 25mm x 12mm at the other end . What is the change in length if a pull of 2300 kN is applied. E= 210 GPa. OR
(b) A bar with the following configuration faces the forces as shown in figure. Find the percentage of elongation or contraction of the bar. Also find the stresses developed in the bar.
END
