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Machine Design

Machine Design
Applications in which stresses are encountered in one direction only uses following type of threads

Buttress
Metric
Acme
Square

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Machine Design
A key made from a cylindrical disc having segmental cross-section, is known as

Gib head key
Feather key
Woodruff key
Flat saddle key

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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

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

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Machine Design
The function of cutting oil when threading a pipe is to

Provide cooling action
All of these
Help removes chips
Lubricate the dies

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Machine Design
Rankine's theory is used for

Elastic materials
Ductile materials
Brittle materials
Plastic materials

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Machine Design
Lewis form factor for 14½° composite and full depth involute system is (where T = Number of teeth)

None of these
0.154 - (0.912/T)
0.124 - (0.684/T)
0.175 - (0.841/T)

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