Machine Design
Stress concentration is caused due to

Abrupt change of section
Variation in properties of material from point to point in a member
All of these
Pitting at points or areas at which loads on a member are applied

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Machine Design
Which of the following statement is wrong for a connecting rod?

The connecting rod will be equally strong in buckling about X-axis and Y-axis, if Ixx = 4 Iyy
If Ixx < 4 Iyy, the buckling will occur about X-axis
The most suitable section for the connecting rod is T-section
If Ixx > 4 Iyy, the buckling will occur about Y-axis

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