Second year, Department of Aeronautical
Engineering
First and second Units Questions.
PART A – (10x2=10 marks)Answer all the Questions
1.
What is the
difference between symmetric and unsymmetrical bending?
2.
In symmetric
bending, the neutral axis passes through the centroid of the cross section.
(True/False)
3.
What do you
understand by unsymmetrical bending?
4.
Define
principle axis and give an expression to determine it.
5.
Define neutral
axis and give an expression to determine it.
6. What
is shear flow?
7. Defineshear
centre.
8. Define
elastic axis.
9. Indicate
the position of shear centre for thin walled section like channel section,
angle section and zees section.
10. Draw and mark shear centre or equal
angle section and Z- section.
PART B – (40 marks) Answer all the
Questions
1. (a)
Derive and obtain an expression for the bending stress in an unsymmetrical
section subjected to bending using ‘neutral axis’ method. (16)
OR
(b) Discuss in the
generalized theory of pure bending. Derive and obtain an expression for the
bending stress in an
unsymmetrical section subjected o bending moments? (16)
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