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Posted By: kondapalli Member Level: Gold Posted Date: 01 May 2008
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2007 Jawaharlal Nehru Technological University B.E Civil SOIL DYNAMICS AND MACHINE FOUNDATION-setno3 Question paper
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1. (a) What is the data required for carrying out design of machine foundations. [8]
(b) What are the different types of machine foundations . Explain their suitability
to various types of machines. [8]
2. Starting from fundamentals, obtain the equations of motion for over damped, crit-
ically damped and under damped systems. [16]
3. (a) Discuss Tschebotarioff?s reduced natural frequency. [8]
(b) Describe the factors affecting co-efficient of elastic uniform compression. [8]
4. (a) Why is vibration isolation required [8]
(b) What do you understand by active isolation and passive isolation. [8]
5. What are the laboratory methods used to determine the dynamic properties of
soils? Explain them in brief. [16]
6. (a) Write a note on pressure bulb concept [8]
(b) How do you arrive at the stiffness factor. [8]
7. (a) What are the modifications made by Quinlan and Sung to Reissner?s theory?
Explain. [10]
(b) Explain Hsiegn’s equation for vertical vibrations. [6]
8. (a) Explain the resonance and its effect. [8]
(b) Discuss the criteria for design of impact type of machines, [8]
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