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Machine Design

Machine Design
The suitable material for belt in agricultural machinery is

Balata gum
Cotton duck
Rubber
Leather

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Machine Design
In a marine flange coupling, the pitch circle diameter of bolts is taken as

2.5 d
2 d
1.6 d
1.2 d

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Machine Design
Tensile strength of a mild steel specimen can be roughly predicted from following hardness test

None of these
Rockwell
Brinell
Vickers

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Machine Design
Which of the following cotter joint will be used to connect strap end of a connecting rod?

Any one of these
Sleeve and cotter joint
Gib and cotter joint
Spigot and socket cotter joint

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Machine Design
The lead angle of a worm is 22.5°. Its helix angle will be

90°
67.5°
22.5°
45°

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Machine Design
Which of the following formula is used in designing a connecting rod?

Johnson's parabolic formula
Johnson's straight line formula
Euler's formula
Rankine's formula

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