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Machine Design

Machine Design
The suitable material for belt in agricultural machinery is

Leather
Balata gum
Cotton duck
Rubber

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Machine Design
A column of length l is fixed at both ends. The equivalent length of the column is

l
l/2
2 l
l/√2

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Machine Design
The rated life of a bearing varies

Inversely as square of load
Inversely as cube of load
Inversely as fourth power of load
Directly as load

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Machine Design
A shaft coupling should

Transmit full power of the shaft
Hold the shafts in perfect alignment
All of these
Be easy to connect or disconnect

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Machine Design
The constant factor in case of R10 series of preferred numbers is

1.12
1.26
1.06
1.58

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Machine Design
The suitable material for belt used in flour mill is

Balata gum
Canvas or cotton duck
Rubber
Leather

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