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Question

A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where `sigma` = Stress for a plate with no hole i.e. nominal stress)


Options:
A .  `sigma (1 + (b)/(2a))`
B .  `sigma (1 + (2a)/(b))`
C .  `sigma (1 + (b)/(3a))`
D .  `sigma (1 + (3a)/(b))`
Answer: Option B



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