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Machine Design

Machine Design
The suitable material for belt in agricultural machinery is

Balata gum
Rubber
Cotton duck
Leather

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Machine Design
When a load W is applied suddenly on a bar of cross-sectional area A, the stress induced in the bar will be

3W/A
2W/A
W/A
W/2A

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Machine Design
A locking device extensively used in marine type connecting rod ends is a

Sawn nut
Ring nut
Castle nut
Jam nut

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Machine Design
In the assembly of pulley, key and shaft

Key is made the strongest
All the three are designed for equal strength
Key is made the weakest
Pulley is made the weakest

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Machine Design
The strength of a riveted joint is equal to

Crushing strength of rivet (Pc)
Tearing strength of plate (Pt)
Least value of Pt Ps and Pc
Shearing strength of rivet (Ps)

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Machine Design
The notch angle of the Izod impact test specimen is

45°
10°
30°
20°

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