Machine Design
Stress concentration is caused due to

All of these
Abrupt change of section
Variation in properties of material from point to point in a member
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
The most suitable section for the connecting rod is T-section
If Ixx > 4 Iyy, the buckling will occur about Y-axis
If Ixx < 4 Iyy, the buckling will occur about X-axis

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Machine Design
In cross or regular lay ropes

Wires in two adjacent strands are twisted in opposite direction
Direction of twist of wires and strands are same
Direction of twist of wires in strands is opposite to the direction of twist of strands
Wires are not twisted

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