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Machine Design

Machine Design
A rivet is specified by

Length of tail
Shank diameter
Type of head
Length of rivet

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Machine Design
The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub)

d/4
d/6
d/8
d/2

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Machine Design
The anti-friction bearings

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

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Machine Design
For general industrial machinery, the ratio of the length of journal to its diameter is taken as

0.5 to 1
3 to 5
5 to 10
1 to 2

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Machine Design
Taper usually provided on cotter is

1 in 5
1 in 24
1 in 10
1 in 40

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Machine Design
The suitable material for belt in agricultural machinery is

Cotton duck
Leather
Balata gum
Rubber

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MORE MCQ ON Machine Design

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