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Machine Design

Machine Design
A column is known as a long column if the slenderness ratio is

50
70
40
100

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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

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

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

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Machine Design
The radial distance from the __________ to the clearance circle is called working depth.

Addendum circle
Pitch circle
None of these
Dedendum circle

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Machine Design
The helix angle for double helical gears may be made up to

45°
90°
60°
75°

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Machine Design
The bearing characteristic number in a hydrodynamic bearing depends upon

Length, width and speed
Viscosity, speed and load
Length, width and load
Viscosity, speed and bearing pressure

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