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Machine Design

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

8°
5°
25°
15°

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Machine Design
For high speed engines, the cam follower should move with

Simple harmonic motion
Cycloidal motion
Uniform velocity
Uniform acceleration and retardation

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Machine Design
According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width (5 rivets per pitch length) should be

80 to 90%
45 to 60%
70 to 83%
63 to 70%

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

Feather key
Flat saddle key
Woodruff key
Gib head key

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Machine Design
The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard specimen can withstand without failure, for infinite number of cycles, when subjected to

Dynamic load
Completely reversed load
Static as well as dynamic load
Static load

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

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

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