Textbook
questions for I P E ( with links to answers )
1.
State Hooke’s law of elasticity. Answer
2.
State the units and dimensions of stress. Answer
3.
State the units and dimensions of modulus of
elasticity. Answer
4.
State the units and dimensions of Young’s
modulus. Answer
5.
State the units and dimensions of modulus of
rigidity. Answer
6.
State the units and dimensions of Bulk modulus. Answer
7.
State the examples of nearly perfect elastic
and plastic bodies. Answer
Short Answer Questions
1.
Define Hooke’s law of elasticity,
proportionality, permanent set, and breaking stress. Answer
2.
Define modulus of elasticity, stress, strain
and Poisson’s ratio. Answer
3.
Define Young’s modulus, Bulk modulus, and Shear
modulus. Answer
4.
Define stress and explain the types of
stress. Answer
5.
Define strain and explain the types of strain. Answer
6.
Define strain energy and derive the equation
for the same. Answer
7.
Explain why steel is preferred to copper,
brass, aluminum in heavy-duty machines and in structural designs. Answer
8.
Describe the behavior of a wire under gradually
increasing load. Answer
9.
Two identical solid balls, one of ivory and the
other of wet clay are dropped from the same height on to the floor. Which one
will rise to a greater height after striking the floor and why? Answer
10.
While constructing buildings and bridges a
pillar with distributed ends is preferred to a pillar with rounded ends. Why? Answer
11.
Explain why the maximum height of a mountain on
earth is approximately 10 km? Answer
12.
Explain the concept of Elastic Potential Energy
in a stretched wire and hence obtain the expression for it. Answer
Long Answer Questions
1.
Define
Hooke’s law of elasticity and describe an experiment to determine the Young’s
modulus of the material of a wire. Answer
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