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Machine Design

Machine Design
The width of the pulley should be __________ width of the belt.

Equal to
None of these
Less than
Greater than

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Machine Design
The endurance limit of a material with finished surface in comparison to rough surface is

More or less depending on quantum of load
More
Less
Same

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Machine Design
The dedendum is the radial distance from the

Top of a tooth to the bottom of a tooth
Pitch circle to the top of a tooth
Addendum circle to the clearance circle
Pitch circle to the bottom of a tooth

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Machine Design
The rated life of a bearing varies

Directly as load
Inversely as fourth power of load
Inversely as square of load
Inversely as cube of load

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Machine Design
A spring is used to

All of these
Store energy
Measure forces
Apply forces

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Machine Design
If T₁ and T₂ are the tensions on the tight and slack sides of the belt respectively, and Tc is the centrifugal tension, then initial tension in the belt is equal to

(T₁ + T₂ + Tc)/2
T₁ + T₂ + Tc
(T₁ - T₂ + Tc)/2
T₁ - T₂ + Tc

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