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Machine Design

Machine Design
In standard taper roller bearings, the angle of taper of outer raceway is

25°
5°
15°
8°

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Machine Design
The strength of a riveted joint is equal to

Shearing strength of rivet (Ps)
Tearing strength of plate (Pt)
Least value of Pt Ps and Pc
Crushing strength of rivet (Pc)

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Machine Design
In radial bearings, the load acts __________ to the axis of rotation.

None of these
Perpendicular
Both A and B
Parallel

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Machine Design
If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (neglecting centrifugal tension) will be equal to (Where, Pc is centrifugal tension)

⅟₂ × (P1 + P2)
[⅟₂ × (P1 + P2)] + Pc
P1 - P2
P1 + P2

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Machine Design
The process which improves the machinability of steels, but lowers the hardness and tensile strength is

Spheroidising
Process annealing
Full annealing
Normalising

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Machine Design
The piston pin bearings in heavy duty diesel engines are

Cylindrical roller bearings
Tapered roller bearings
Spherical roller bearings
Needle roller bearings

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