Machine Design
The permissible stress for carbon steel under static loading is generally taken as

7500-10,000 kg/cm²
4000-4500 kg/cm²
3000-4000 kg/cm²
2000-3000 kg/m²

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Machine Design
Machine screws are

Similar to stud
Used to prevent relative motion between two parts
Similar to small size tap bolts except that a greater variety of shapes of heads are available
Slotted for a screw driver and generally used with a nut

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

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

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