Bangalore University 2004 B.E Elements of Civil Engg-y/ust - Question Paper
Page No... 1 CIV103
sn L_LL____j_ First Semester B.E Degree Examination, July/August 2004Common to all Branches (Old Scheme)
Time: 3 hrs.]
[Max. Marks : 100
Note: (1) Answer any EIGHT full questions from question No 1 to 12 and SIX questions from question No. 13 to 21.
(2) Missing data if any may be suitably assumed.
1. Explain the different types of defects In timber. (5 Mark*)
2. List the ingredients of Portland Cement. (5 Marks)
3. What are the requirements of good building stone? (s
4. State the advantages of plastic. - * (5 Mark*; -
5. Explain the principle of transmissibility with neat figure. (5 Marks)
6. Distinguish between plywood and laminates. (s Marks)
7. Explain cross product and dot product, with relevant examples. (5 Marks)
8. State and explain D'Alembert's principle. (5 Marks)
9. Using first principle, locate the centroid of a semi circle. (5 Marks)
10. State the uses of aluminium. (5 Marks)
11. What is workability of concrete and how is it measured? (5 Marks)
12. Show that a force can be resolved into a force and a couple. (5 Marks)
13. (a) Explain different types of timber generally adopted in construction. (5 Marks)
(b) An electric fixture weighing 20N hangs from point C by two strings AC and BC. AC is inclined to horizontal by 70 and BC at 30 to vertical as shown in
figure 1. Find the force in AC arid BC by vector approach. (5 Marks)14. (a) List the different types of flooring adopted in construction.
(4 Marks)
(b) The three like parallel forces lOOiV, F and 300N are acting as shown in figure 2. If the resultant R = 6007V and is acting at C at a distance of 450mm from A. then find the magnitude of force F and the distance x from A, by using vector approach. (6 Marks)
15. (a) State and prove Varignons theorem, (b) State and prove parallel axis theorem.
(S Marks) (5 Marks)
ContcL... 2
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Page No... 2 CIV103
16. (a) What is curing and how does it influence the strength of concrete? (5 Marks) (b) List the advantages and uses of PSC and RCC. (5 Marks)
17. (a) Distinguish between centroid and centre of gravity. (4 Marks) (b) Find the reactions at the supports for the beam shown in figure 3. (6 Marks)
18. (a) Define Rigid body and Free body diagram. (2 Marks)
(b) Determine the coordinates of the centroid of the plane lamina shown in figure 4 with respect to point A. (8 Marks)
19. (a) What are the desirhi -r.ues of paints? (5 Marks)
(b) y using first principle find the moment of inertia of a circle about centroidal axis. (5 Marks)
20. (a) State the laws of diy friction. (4 Marks)
(b) A ladder 5m long and weighing 250N is resting against a wall as shown in figure 5. A man weighing 8007V climbs the ladder. How high will he be when the ladder slips. The coefficient of friction for all contact surfaces is 0.2C
(6 Marks)
21. (a) Define work, power and energy. (3 Mark*)
(bj A train of weight 1500fc.iV is ascending a slope of 1 in 100 with a uniform speed of 36 km/hr. Find the power exerted by the engine, if the road resistance is 5N per kN weight of the train. (7 Marks)
Figure-S
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CD 20N |
Con'd..., 3
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Attachment: |
| Earning: Approval pending. |
