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Machine Design

Machine Design
A transmission shaft includes

Counter shaft
Line shaft
All of these
Over head shaft

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Machine Design
When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be

Square threads
Buttress threads
Acme threads
Knuckle threads

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Machine Design
The endurance limit for a mirror polished material will be __________ as compared to unpolished material.

None of these
More
Same
Less

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Machine Design
The process extensively used for making bolts and nuts is

Hot piercing
Extrusion
Cold peening
Cold heading

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Machine Design
If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (according to Barth) will be equal to (Where, Pc is centrifugal tension)

P1 + P2
[(√P1 + √P2)/2]²
[⅟₂ × (P1 + P2)] + Pc
⅟₂× (P1 + P2)

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Machine Design
The bearing characteristic number in a hydrodynamic bearing depends upon

Length, width and load
Length, width and speed
Viscosity, speed and bearing pressure
Viscosity, speed and load

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