Structural Mechanics, Question Paper of Civil Engineering 4th Semester, Download Question Paper 2

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STRUCTURAL MECHANICS

5^th Exam /Civil/5162/Dec’07

                                                             

Duration 3 Hrs.

Section –A

Note : attempt any ten questions.

1.       

a.     Define Hooke’s law. Poisson’s ratio.

b.     What do you mean by temperature stress?

c.      Describe tensile test in brief.

d.     What sign convention is followed universally for the bending moments?

e.      Draw BMD for a SS beam carrying ud. I w/unit length over a span ‘I’.

f.       Describe the concept of second moment of area.

g.     Define theorem of perpendicular axes.

h.     Define and write the equation for moment area method of slope.

i.       Give Euler’s formula for buckling bonds of columns.

j.       Define a perfect frame.

k.     Write theory of simple bending.

l.       Sketch the shear stress distribution in I section.

Section –B

Note : Attempt any three questions.

2.      

a.     For an I section with flanges =60 x 10 mm and web = 20 x 200mm determine 1xx, 1yy

b.     A beam ABC = 10 m , is hinged at A and supported at B at a distance of 8m from A and supports 4KN at C and u.d.i. of  0.5 KN/m from A to B. draw B.N.D and S.F.D and locate point of centraflecuse if any.

c.     A cast iron water main 1.0 m long of 550 mm outer dia and 25 mm wall thickness runs full water and is supported at its ends. Calculate the max. stress in metal if density of cast iron is 70.6 KMm3 and that of water is 9.81 KN/m3

d.     A beam 4 m long is simple supported at its ends and carries point loads of 10 KN each at both the quarter points calculate the maximum slope and deflection of the beam. Take EL= 4 x 10¹² N –mm² use moment area methods.