Machine Design
When carbon in the cast iron is principally in the form of graphite, the cast iron will be of

Yellow colour
Grey colour
White colour
Brown colour

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Machine Design
In case of thick cylinders, the tangential stress across the thickness of cylinder is

Maximum at the inner surface and zero at the outer surface
Maximum at the outer surface and zero at the inner surface
Maximum at the outer surface and minimum at the inner surface
Maximum at the inner surface and minimum at the outer surface

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Machine Design
Set screws are

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

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