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Machine Design

Machine Design
A crankshaft is a __________ shaft.

Machine frame
Machine
None of these
Transmission

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

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

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Machine Design
In a full journal bearing, the angle of contact of the bearing with the journal is

270°
120°
360°
180°

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Machine Design
A key capable of tilting in a recess milled out in a shaft is known as

Hollow saddle key
Woodruff key
Flat saddle key
Feather key

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Machine Design
For a shoe brake, the equivalent coefficient of friction is equal to (where μ = Actual coefficient of friction, and θ = Semi-block angle)

2μ sinθ/(θ + sinθ)
μ sinθ/(2θ + sin 2θ)
4μ sinθ/(2θ + sin 2θ)
4μ sinθ/(θ + sinθ)

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Machine Design
The pitch of threads on a Jock nut in comparison to pitch of nut is

Coarser
Same
Very fine
Finer

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