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Machine Design

Machine Design
The diameter of the rivet hole is usually __________ the nominal diameter of the rivet.

Equal to
More than
Less than
None of these

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Machine Design
For longitudinal joint in boilers, the type of joint used is

Any one of the above
Butt joint with single cover plate
Lap joint with one ring overlapping the other
Butt joint with double cover plate

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Machine Design
The relation between the pitch of the chain (p) and pitch circle diameter of the sprocket (D) is given by (where T = Number of teeth on the sprocket)

p = D sin (180°/T)
p = D sin (360°/T)
p = D sin (90°/T)
p = D sin (120°/T)

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Machine Design
The maximum shear stress theory is used for

Brittle materials
Plastic materials
Ductile materials
Nonferrous materials

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Machine Design
In a horizontal flat belt drive, it is customary to use

Idler pulley
None of these
Bottom side of belt as slack side
Top side of belt as slack side

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Machine Design
When the material of key and shaft is same, and the width of key is one-fourth of the diameter of shaft (d), then length of key will be

1.2 d
1.8 d
1.57 d
0.8 d

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