To get a minimum value of stress (g) what should be the ratio of core diameter to sheath diameter?

To get a minimum value of stress (g) what should be the ratio of core

1.	To get a minimum value of stress (g) what should be the ratio of core diameter to sheath diameter?
A.	1 / 2.718
B.	2.178
C.	1 / 3.78
D.	3.78
Answer» B. 2.178

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To get a minimum value of stress (g) what should be the ratio of core diameter to sheath diameter?

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