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Machine Design

Machine Design
In radial bearings, the load acts __________ to the axis of rotation.

Perpendicular
None of these
Parallel
Both A and B

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Machine Design
The difference between the tooth space and the tooth thickness as measured on the pitch circle, is called

Face width
Working depth
Clearance
Backlash

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Machine Design
Which is positive drive?

V belt drive
Timing belt
Flat belt drive
Crossed belt drive

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

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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/2σt
pd/σt

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Machine Design
The property of a bearing material which has the ability to accommodate shaft deflections and bearing inaccuracies by plastic deformation without excessive wear and heating, is known as

Fatigue strength
Bondability
Comformability
Embeddability

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