Machine Design
For circumferential joint in boilers, the type of joint used is

Butt joint with single cover plate
Any one of the above
Butt joint with double cover plate
Lap joint with one ring overlapping the other

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Machine Design
Tapered roller bearings can take

Both radial and axial loads and the ratio of these being greater than unity
Axial load only
Radial load only
Both radial and axial loads and the ratio of these being less than unity

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Machine Design
When a machine member is subjected to torsion, the torsional shear stress set up in the member is

Maximum at both the centroidal axis and outer surface of the member
Maximum at the centroidal axis and zero at the outer surface of the member
Zero at the centroidal axis and maximum at the outer surface of the member
Zero at both the centroidal axis and outer surface of the member

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