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Machine Design

Machine Design
Two shafts of the same length and material are joined in series. If the ratio of their diameters is 2, then the ratio of their angles of twist will be

8
2
16
4

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Machine Design
A locking device extensively used in automobile industry is a

Jam nut
Castle nut
Ring nut
Sawn nut

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Machine Design
Guest's theory of failure is applicable for following type of materials

Elastic
Plastic
Ductile
Brittle

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Machine Design
A double strap butt joint (with equal straps) is

Always in single shear
Any one of these
Either in single shear or double shear
Always in double shear

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Machine Design
A sliding bearing which operates without any lubricant present, is called

Hydrodynamic lubricated bearing
Hydrostatic lubricated bearing
Boundary lubricated bearing
Zero film bearing

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Machine Design
Basic hole is one

Does not exist
Whose lower as well as upper deviations are zero
Whose lower deviation is zero
Whose upper deviation is zero

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