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Machine Design

Machine Design
The efficiency of a riveted joint is equal to

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

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Machine Design
In standard taper roller bearings, the angle of taper of outer raceway is

5°
25°
15°
8°

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Machine Design
The rolling contact bearings as compared to sliding contact bearings have

Low starting and low running friction except at very high speeds
All of these
Small overall dimensions
Accuracy of shaft alignment

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

One-half
One-third
One-fourth
Double

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

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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
Spigot and socket cotter joint
Any one of these

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