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Machine Design

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

Brittle
Plastic
Ductile
Elastic

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Machine Design
The initial tension (in newtons) in a bolt used for making a fluid tight joint like steam engine cover joints, is calculated by the relation (where d = Nominal diameter of bolt in mm)

2840 d
1680 d
2080 d
1420 d

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Machine Design
When the bolt is very yielding as compared to the connected members, then the resultant load on the bolt will be equal to the

Initial tension or external load, whichever is greater
Initial tension
Sum of the initial tension and external load applied
External load applied

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

Jam nut
Castle nut
Ring nut
Sawn nut

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Machine Design
The static tooth load should be __________ the dynamic load.

Equal to
Less than
Greater than
None of these

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Machine Design
A sliding bearing in which although lubricant is present, the working surfaces __________ contact each other at least part of the time, is called boundary lubricated bearing.

Partially
Fully
Either A or B
None of these

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