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Machine Design

Machine Design
The V-belts are particularly suitable for __________ drives.

Long
Both A and B
None of these
Short

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Machine Design
The ball bearings are provided with a cage

To maintain the balls at a fixed distance apart
To facilitate slipping of balls
To prevent the lubricant from flowing out
To reduce friction

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Machine Design
The centre distance between two meshing involute gears is equal to

Sum of pitch circle radii/cosφ
Difference of pitch circle radii/cosφ
Sum of base circle radii/cosφ
Difference of base circle radii/cosφ

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Machine Design
The size of a cam depends upon

Pitch circle
Pitch curve
Base circle
Prime circle

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Machine Design
If a material fails below its yield point, failure would be due to

Fatigue
Creep
Sudden loading
Straining

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Machine Design
The anti-friction bearings

Have high initial cost
Have low starting and low running friction at moderate speeds
All of these
Can carry both radial and thrust loads

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