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Machine Design

Machine Design
The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be

44045
44047
43929
43869

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Machine Design
Stress concentration in static loading is more serious in

Ductile materials
Brittle materials
Equally serious in both cases
Depends on other factors

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Machine Design
The stress in the threaded part of the bolt will be __________ as compared to the shank.

Lower
Higher
None of these
Same

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Machine Design
Two rigid plates are clamped by means of bolt and nut with an initial force F. After tightening, a separating force P (P < F) is applied to the lower plate, which in turn acts on the nut. The tension in the both after this is

F + P
P
F.P
F

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Machine Design
Shear stress theory is applicable for

All of these
Ductile materials
Elastic materials
Brittle materials

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Machine Design
A screw is specified by its

Pitch diameter
Major diameter
Pitch
Minor diameter

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