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Machine Design

Machine Design
For a shaft diameter of 200 mm, the number of bolts in a marine flange coupling should be

6
4
10
8

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Machine Design
The yield point in static loading is __________ as compared to fatigue loading.

None of these
Lower
Same
Higher

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Machine Design
When two springs are in series (having stiffness K), the equivalent stiffness will be

K/4
2K
K/2
K

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Machine Design
A screw will be self locking, if

Friction angle is more than helix angle
Efficiency of screw is 100%
Friction angle is less than helix angle
Friction angle is equal to helix angle

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Machine Design
A screw is specified by its

Minor diameter
Pitch
Major diameter
Pitch diameter

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Machine Design
If an application calls for stresses on screw threads in one direction only, then the following type of thread would be best suited

Buttress
Acme
BSW
Square

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