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A solid cylinder of diameter 100 mm and height 50 mm...

This question belongs to Mechanical Engineering Manufacturing And Production Technology
Manufacturing and Production Technology
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A solid cylinder of diameter 100 mm and height 50 mm is forged between two frictionless flat dies to a height of 25 mm. The percentage change in diameter is

Answer & Solution
Correct Answer: Option D
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2 Comments
Vimala K
Vimala K 7 years ago
From incompressibility,
πd1² h1 = πd2² h2

⇒ d2 = d2 × √
h1

h2

⇒ d2 = 100 × √
50
= 141.42
25

Percentage change in diameter =
d2 - d1
× 100 = 41.42%
d1
G Pruthvi
G Pruthvi 7 years ago
How expain
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