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Machine Design

Machine Design
The shock resistance of steel is increased by adding

Cobalt and molybdenum
Chromium
Nickel and chromium
Nickel

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Machine Design
An alien bolt is

Used in high speed components
Provided with hexagonal depression in head
Same as stud
Self locking bolt

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Machine Design
The expression 0.175 - 0.841/T is the Lewis form factor for

14½° composite and full depth involute system
20° full depth involute system
None of these
20° stub system

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

8
10
6
4

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Machine Design
The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is

1 micron
0.1 micron
10 microns
0.01 micron

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Machine Design
If threads on a bolt are left hand, threads on nut will be

Right hand with same pitch
Right hand with fine pitch
Could be left or right hand
Left hand with same pitch

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