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Machine Design

Machine Design
The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be

44047
43869
44045
43929

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Machine Design
According to I.B.R., the efficiency of a double riveted butt joint with double cover straps of equal width should be

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

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Machine Design
A self locking screw has

Fine threads
Course threads
Hole for inserting split pin
Coefficient of friction is greater than tangent of load angle

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Machine Design
A double strap butt joint (with equal straps) is

Either in single shear or double shear
Any one of these
Always in double shear
Always in single shear

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Machine Design
The face angle of a bevel gear is equal to

Pitch angle + addendum angle
Pitch angle - dedendum angle
Pitch angle + dedendum angle
Pitch angle - addendum angle

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Machine Design
In thrust bearings, the load acts

In any direction
Perpendicular to the axis of rotation
Along the axis of rotation
Parallel to the axis of rotation

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