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प्रश्न
Answer in one sentence.
What do you mean by elastic hysteresis?
उत्तर
In case of some materials like vulcanized rubber, when the stress applied on a body decreases to zero, the strain does not return to zero immediately. The strain lags behind the stress. This lagging of strain behind the stress is called elastic hysteresis.
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संबंधित प्रश्न
Anvils made of single crystals of diamond, with the shape as shown in Figure, are used to investigate the behaviour of materials under very high pressures. Flat faces at the narrow end of the anvil have a diameter of 0.50 mm, and the wide ends are subjected to a compressional force of 50,000 N. What is the pressure at the tip of the anvil?
Answer in one sentence.
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Answer in one sentence.
What is an elastomer?
Long answer type question.
Draw a labelled graph of tensile stress against tensile strain for a metal wire up to the breaking point. In this graph show the region in which Hooke’s law is obeyed.
The stress-strain curves are drawn for two different materials X and Y. It is observed that the ultimate strength point and the fracture point are close to each other for material X but are far apart for material Y. We can say that materials X and Y are likely to be (respectively).
The stress-strain graphs for two materials are shown in figure (assume same scale).
 Material (i) |
 Material (i) |
- Material (ii) is more elastic than material (i) and hence material (ii) is more brittle.
- Material (i) and (ii) have the same elasticity and the same brittleness.
- Material (ii) is elastic over a larger region of strain as compared to (i).
- Material (ii) is more brittle than material (i).
The stress-strain graphs for two materials are shown in figure (assume same scale).
Material (i) |
Material (i) |
- Material (ii) is more elastic than material (i) and hence material (ii) is more brittle.
- Material (i) and (ii) have the same elasticity and the same brittleness.
- Material (ii) is elastic over a larger region of strain as compared to (i).
- Material (ii) is more brittle than material (i).
Answer in one sentence.
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Answer in one sentence.
What is an elastomer?
Answer in one sentence:
What is an elastomer?
Answer in one sentence:
What is an elastomer?
Answer in one sentence:
What is an elastomer?
Answer in one sentence:
What is an elastomer?
What is an elastomer?
Answer in one sentence:
What is an elastomer?
Answer in one sentence.
What is an elastomer?
Answer in one sentence.
What is an elastomer?
Answer in one sentence:
What is an elastomer?
