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Machine Design

Machine Design
The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub)

d/6
d/4
d/2
d/8

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Machine Design
While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as

One end fixed and the other end hinged
One end fixed and the other end free
Both the ends fixed
Both the ends hinged

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Machine Design
Which of the following pipe joints would be suitable for pipes carrying steam?

Expansion
Threaded
Bell and spigot
Flanged

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Machine Design
Endurance limit or fatigue limit is the maximum stress that a member can withstand for an infinite number of load applications without failure when subjected to

Static loading
Dynamic loading
Combined static and dynamic loading
Completely reversed loading

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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
External load applied
Sum of the initial tension and external load applied

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Machine Design
When carbon in the cast iron is principally in the form of graphite, the cast iron will be of

Grey colour
Yellow colour
White colour
Brown colour

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