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Machine Design

Machine Design
The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be

43869
44045
44047
43929

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

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

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Machine Design
A hot short metal is

Brittle when hot
Ductile at high temperature
Brittle under all conditions
Brittle when cold

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Machine Design
A V-belt designated as B 4430 LP has

4430 mm as nominal pitch length
4430 mm as diameter of large pulley
4430 mm as diameter of small pulley
4430 mm as centre distance between pulleys

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Machine Design
A thin spherical shell of internal diameter d is subjected to an internal pressure p. If σt is the tensile stress for the shell material, then thickness of shell is equal to

pd/3σt
pd/4σt
pd/σt
pd/2σt

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Machine Design
If a load W is applied instantaneously on a bar; Then the stress induced in bar will

Be independent of ratio of mass of load W to mass of bar (y)
Decrease with decrease in y
Depend on other considerations
Increase with increase in y

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