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Machine Design

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

43832
2
4
1

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Machine Design
Gears are casted by

Slush casting
Sand mould casting
Permanent mould casting
Centrifugal casting

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Machine Design
In a boundary lubricated bearing, there is a __________ of lubricant between the journal and the bearing.

Either A or B
None of these
Thick film
Thin film

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

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

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Machine Design
The dynamic tooth load is due to

Inaccuracies of tooth spacing
All of these
Irregularities in tooth profiles
Deflections of teeth under load

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Machine Design
In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called

Module
Normal pitch
Axial pitch
Diametral pitch

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