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Machine Design

Machine Design
Ball bearing type screws are found in following application

Aeroplane engines
Screw jack
Crane
Steering mechanism

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Machine Design
A circular shaft can transmit a torque of 5 kN-m. If the torque is reduced to 4 kN-m, then the maximum value of bending moment that can be applied to the shaft is

4 kN-m
1 kN-m
2 kN-m
3 kN-m

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Machine Design
If shearing stress in nut is half the tensile stress in a bolt, then nut length should be equal to

0.75 × diameter of bolt
1.25 × diameter of bolt
Diameter of bolt
1.5 × diameter of bolt

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Machine Design
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is

43832
1
4
2

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Machine Design
The lower deviation is the algebraic difference between the

Actual size and the corresponding basic size
None of these
Maximum limit and the basic size
Minimum limit and the basic size

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

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

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