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Machine Design

Machine Design
The efficiency of a riveted joint is equal to

Ps /P
Least of Pt, Ps and Pc/P
Pc /P
Pt /P

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Machine Design
The helix angle for single helical gears ranges from

35° to 50°
20° to 35°
10° to 15°
15° to 20°

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Machine Design
The allowable static stress for steel gears is approximately __________ of the ultimate tensile stress.

Double
One-half
One-third
One-fourth

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Machine Design
The resistance to fatigue of a material is measured by

Endurance limit
Elastic limit
Young's modulus
Ultimate tensile strength

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Machine Design
A locking device extensively used in marine type connecting rod ends is a

Castle nut
Ring nut
Jam nut
Sawn nut

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Machine Design
A coupling used to connect two perfectly aligned shafts, is

Flange coupling
All of these
Muff coupling
Compression coupling

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