Sample Exam 1 
Machine Elements Design 
SE1 


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B) Define the following:
a Strain (ε):
b Allowable stress (σ_{all}):
c Second moment of area (I):
2 A) Find the (_{}) of the following area (all dimensions in cm):


B Find (I_{x}) of the following shape (all dimensions in cm):All the thicknesses are 2 cm. 

3 A steel bar of circular cross section, the bar diameter is 20 mm (a) Find the tensile stress at point A, due to a force of 10 000 N.


(b) Find the bending stress at point A, due to a force of 1000 N.


c) Find the torsion stress at point A, due to a torque of 300 Nm.


(d) Find the strain in case (a), if the modulus of elasticity of the shaft material E= 20x10^{4} MPa.
(e) Find the stress at point A, due to combined loading as in case (a) and case (b).
4 Write down the types of springs and their usages in machines
Spring type

Spring usages 







