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Which of the following materials requires the largest shrinkage allowance, while making a pattern for casting?
- a)Aluminium
- b)Brass
- c)Cast Iron
- d)Plain Carbon Steel
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Which of the following materials requires the largest shrinkage allowa...
Aluminium is having largest liquid shrinkage and overall liquid & solid shrinkage is max for steel. But riser is used for compensation of liquid metal. So answer must be A.
This question is part of UPSC exam. View all Mechanical Engineering courses
Most Upvoted Answer
Which of the following materials requires the largest shrinkage allowa...
Shrinkage allowance in pattern making for casting
Shrinkage allowance is the amount of additional material added to a pattern in order to compensate for the shrinkage that occurs during the solidification of molten metal in the casting process. The amount of shrinkage allowance depends on the material being cast, as different materials have different shrinkage rates.
Materials and their shrinkage allowances
- Aluminium - requires the largest shrinkage allowance of all materials. This is because aluminium has a high shrinkage rate of around 6%.
- Brass - requires a smaller shrinkage allowance compared to aluminium, but still significant. Brass has a shrinkage rate of around 2%.
- Cast Iron - requires a smaller shrinkage allowance than brass, as it has a shrinkage rate of around 1%.
- Plain Carbon Steel - requires the smallest shrinkage allowance of all materials, as it has a shrinkage rate of around 0.5%.
Explanation of answer
The question asks which material requires the largest shrinkage allowance while making a pattern for casting. Based on the above information, the correct answer is aluminium. Aluminium has a high shrinkage rate of around 6%, which means that it requires the largest shrinkage allowance compared to other materials. Therefore, option 'A' is the correct answer.
Shrinkage allowance is the amount of additional material added to a pattern in order to compensate for the shrinkage that occurs during the solidification of molten metal in the casting process. The amount of shrinkage allowance depends on the material being cast, as different materials have different shrinkage rates.
Materials and their shrinkage allowances
- Aluminium - requires the largest shrinkage allowance of all materials. This is because aluminium has a high shrinkage rate of around 6%.
- Brass - requires a smaller shrinkage allowance compared to aluminium, but still significant. Brass has a shrinkage rate of around 2%.
- Cast Iron - requires a smaller shrinkage allowance than brass, as it has a shrinkage rate of around 1%.
- Plain Carbon Steel - requires the smallest shrinkage allowance of all materials, as it has a shrinkage rate of around 0.5%.
Explanation of answer
The question asks which material requires the largest shrinkage allowance while making a pattern for casting. Based on the above information, the correct answer is aluminium. Aluminium has a high shrinkage rate of around 6%, which means that it requires the largest shrinkage allowance compared to other materials. Therefore, option 'A' is the correct answer.
Community Answer
Which of the following materials requires the largest shrinkage allowa...
It is wrong answer given by app...brass should be answer. Anyone have correct explanation for Al to be correct ?
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Which of the following materials requires the largest shrinkage allowance, while making a pattern for casting?a)Aluminium b)Brass c)Cast Iron d)Plain Carbon SteelCorrect answer is option 'A'. Can you explain this answer?
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Which of the following materials requires the largest shrinkage allowance, while making a pattern for casting?a)Aluminium b)Brass c)Cast Iron d)Plain Carbon SteelCorrect answer is option 'A'. 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 Which of the following materials requires the largest shrinkage allowance, while making a pattern for casting?a)Aluminium b)Brass c)Cast Iron d)Plain Carbon SteelCorrect answer is option 'A'. 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 Which of the following materials requires the largest shrinkage allowance, while making a pattern for casting?a)Aluminium b)Brass c)Cast Iron d)Plain Carbon SteelCorrect answer is option 'A'. Can you explain this answer?.
Which of the following materials requires the largest shrinkage allowance, while making a pattern for casting?a)Aluminium b)Brass c)Cast Iron d)Plain Carbon SteelCorrect answer is option 'A'. 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 Which of the following materials requires the largest shrinkage allowance, while making a pattern for casting?a)Aluminium b)Brass c)Cast Iron d)Plain Carbon SteelCorrect answer is option 'A'. 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 Which of the following materials requires the largest shrinkage allowance, while making a pattern for casting?a)Aluminium b)Brass c)Cast Iron d)Plain Carbon SteelCorrect answer is option 'A'. Can you explain this answer?.
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