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Machine Design

Machine Design
In Vickers hardness testing, the pyramid indentor apex is

152°
136°
122°
40°

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Machine Design
Which of the following coupling is used to connect two shafts which have both lateral and angular misalignment?

Oldham coupling
Bushed pin type coupling
Universal coupling
All of these

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Machine Design
A locking device extensively used in marine type connecting rod ends is a

Castle nut
Jam nut
Sawn nut
Ring nut

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Machine Design
When an open coiled helical compression spring is subjected to an axial compressive load, the stress induced in the wire is

Tensile stress
Bending stress
Compressive stress
Shear stress

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Machine Design
When compared to the rod of the same diameter and material, a wire rope

Provides much greater time for remedial action before failure
Has a much smaller load carrying capacity
Is less flexible
Does not provide much warning before failure

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Machine Design
Brittle coating technique is used for

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

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