Mechanical Engineering Exam > Mechanical Engineering Questions > Consider the following statements:1. Thermopl...
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Consider the following statements:
1. Thermoplastics possess a strong intermolecular bonding compared to that ofthermosetting plastics.
2. Plastics have a high creep under continuous loading.
3. Embrittlement occurs in plastics at low temperature.
Which of these statements are correct?
1. Thermoplastics possess a strong intermolecular bonding compared to that ofthermosetting plastics.
2. Plastics have a high creep under continuous loading.
3. Embrittlement occurs in plastics at low temperature.
Which of these statements are correct?
- a)1 and 2
- b)2 and 3
- c)1 and 3
- d)1, 2 and 3
Correct answer is option 'B'. Can you explain this answer?
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Consider the following statements:1. Thermoplastics possess a strong i...
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Consider the following statements:1. Thermoplastics possess a strong i...
Interpretation of the statements:
1. Thermoplastics possess a strong intermolecular bonding compared to that of thermosetting plastics: This statement is incorrect. Thermosetting plastics have stronger intermolecular bonding compared to thermoplastics, which allows them to retain their shape and strength even at high temperatures.
2. Plastics have a high creep under continuous loading: This statement is correct. Creep is the tendency of a material to deform slowly under a constant load over time. Plastics are known to have a high creep under continuous loading compared to metals.
3. Embrittlement occurs in plastics at low temperature: This statement is correct. Plastics can become brittle and prone to fracture at low temperatures due to reduced molecular mobility.
Explanation:
- The strong intermolecular bonding in thermosetting plastics allows them to retain their shape and strength at elevated temperatures, making them ideal for applications where heat resistance is required.
- Creep is a significant concern in plastic materials, especially under continuous loading, as it can lead to deformation and failure over time.
- Embrittlement at low temperatures is a common issue with plastics, and it is important to consider the temperature range in which a plastic material will be used to prevent failures due to embrittlement.
Therefore, statement 2 and 3 are correct, while statement 1 is incorrect.
1. Thermoplastics possess a strong intermolecular bonding compared to that of thermosetting plastics: This statement is incorrect. Thermosetting plastics have stronger intermolecular bonding compared to thermoplastics, which allows them to retain their shape and strength even at high temperatures.
2. Plastics have a high creep under continuous loading: This statement is correct. Creep is the tendency of a material to deform slowly under a constant load over time. Plastics are known to have a high creep under continuous loading compared to metals.
3. Embrittlement occurs in plastics at low temperature: This statement is correct. Plastics can become brittle and prone to fracture at low temperatures due to reduced molecular mobility.
Explanation:
- The strong intermolecular bonding in thermosetting plastics allows them to retain their shape and strength at elevated temperatures, making them ideal for applications where heat resistance is required.
- Creep is a significant concern in plastic materials, especially under continuous loading, as it can lead to deformation and failure over time.
- Embrittlement at low temperatures is a common issue with plastics, and it is important to consider the temperature range in which a plastic material will be used to prevent failures due to embrittlement.
Therefore, statement 2 and 3 are correct, while statement 1 is incorrect.
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Consider the following statements:1. Thermoplastics possess a strong intermolecular bonding compared to that ofthermosetting plastics.2. Plastics have a high creep under continuous loading.3. Embrittlement occurs in plastics at low temperature.Which of these statements are correct?a)1 and 2b)2 and 3c)1 and 3d)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?
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Consider the following statements:1. Thermoplastics possess a strong intermolecular bonding compared to that ofthermosetting plastics.2. Plastics have a high creep under continuous loading.3. Embrittlement occurs in plastics at low temperature.Which of these statements are correct?a)1 and 2b)2 and 3c)1 and 3d)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Consider the following statements:1. Thermoplastics possess a strong intermolecular bonding compared to that ofthermosetting plastics.2. Plastics have a high creep under continuous loading.3. Embrittlement occurs in plastics at low temperature.Which of these statements are correct?a)1 and 2b)2 and 3c)1 and 3d)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:1. Thermoplastics possess a strong intermolecular bonding compared to that ofthermosetting plastics.2. Plastics have a high creep under continuous loading.3. Embrittlement occurs in plastics at low temperature.Which of these statements are correct?a)1 and 2b)2 and 3c)1 and 3d)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?.
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