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Machine Design

Machine Design
Ball bearing type screws are found in following application

Aeroplane engines
Steering mechanism
Screw jack
Crane

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Machine Design
In case of pressure vessels having open ends, the fluid pressure induces

Circumferential stress
None of these
Longitudinal stress
Shear stress

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Machine Design
In order to permit the thermal expansion/contraction of tubing, it should be

Flared
Crimped
Honed
Bent

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Machine Design
The form factor of a helical gear __________ with the increase in the helix angle.

Increases
Remains constant
Decreases
None of these

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Machine Design
According to Indian standard specifications, 100 H6/g5 means that the

None of these
Basic size is 100 mm
Actual size is 100 mm
Difference between the actual size and basic size is 100 mm

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Machine Design
The ratio of driving tensions for flat belts, neglecting centrifugal tension, is (where T₁, and T₂ = Tensions on the tight and slack sides of belt respectively, μ = Coefficient of friction, between the belt and pulley, and θ = Angle of contact)

T₁/T₂ = log μθ
T₁/T₂ =eμθ
log (T₁/T₂) = μθ
T₁/T₂ = μθ

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