Machine Design
A steel containing up to 0.15% carbon is known as

Medium carbon steel
High carbon steel
Dead mild steel
Mild steel

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Machine Design
A woodruff key is

Capable of tilting in a recess milled out in the shaft
All of these
A tapered key with head at one end
Fitted in pairs at right angles

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Machine Design
In order to determine the stresses in a thin cylinder due to an internal pressure, it is assumed that

The effect of curvature of the cylinder wall is neglected
All of these
The effect of the restraining action of the heads at the end of the pressure vessel is neglected
The tensile stresses are uniformly distributed over the section of the walls

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