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Machine Design

Machine Design
The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is

10 microns
1 micron
0.1 micron
0.01 micron

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Machine Design
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is

4
2
1
43832

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Machine Design
In thrust bearings, the load acts

In any direction
Perpendicular to the axis of rotation
Parallel to the axis of rotation
Along the axis of rotation

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Machine Design
Brittle coating technique is used for

Determining brittleness
Protecting metal against corrosion
Protecting metal against wear and tear
Experimental stress analysis

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Machine Design
If b denotes the face width and L denotes the cone distance for a bevel gear, then the bevel factor is written as

1 - (b/L)
1 - 2 b.L
b/L
b/2L

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Machine Design
The maximum bending stress in a curved beam having symmetrical section always occur at the

Centroidal axis
Inside fiber
Neutral axis
Outside fiber

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