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ISRO Mechanical Exam: Strength of Materials Quiz

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Question 1

If a material expands freely due to heating it will develop __________.

Question 2

A hollow shaft of same cross-section area as solid shaft transmits

Question 3

An Aluminum tensile test specimen has a diameter, do= 25 mm and a gauge length of L0=250mm. If a force of 175 kN elongates the gauge length by 1.25 mm, the modulus of elasticity of the material is nearly

Question 4

Which of the following stresses are associated with the tightening of a nut on a stud?
1) Tensile stresses due to stretching of stud.
2) Bending stresses of stud.
3) Transverse shear stresses across threads.
4) Torsional shear stresses in threads due to frictional resistance.
Select the correct answer using the codes given below:
Codes:

Question 5

Strain energy U, in the case of axially loaded bar is expressed as, (where P is axial load, L is bar length, A is corss-section area of the bar, E is Young’s Modulus of the bar, is axial stress, is elongation due to axial load)
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