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Machine Design

Machine Design
The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub)

d/4
d/2
d/8
d/6

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Machine Design
The shock absorbing capacity of a bolt can be increased by

Grinding the shank
Tightening it properly
Making shank diameter equal to core diameter of thread
Increasing shank diameter

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Machine Design
A thin spherical shell of internal diameter d is subjected to an internal pressure p. If σt is the tensile stress for the shell material, then thickness of shell is equal to

pd/4σt
pd/3σt
pd/2σt
pd/σt

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Machine Design
An Involute pinion and gear are in mesh. If both have the same size of addendum, then there will be interference between the

Tip of the gear and flank of pinion
Flanks of both gear and pinion
Tip of both gear and pinion
Tip of the pinion and flank of gear

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Machine Design
Which of the following welded joint is designed for shear strength?

Transverse fillet welded joint
Parallel fillet welded joint
Butt welded joint
All of these

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Machine Design
Which of the following cotter joint will be used to connect strap end of a connecting rod?

Sleeve and cotter joint
Gib and cotter joint
Any one of these
Spigot and socket cotter joint

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