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Machine Design

Machine Design
The crest diameter of a screw thread is same as

Minor diameter
Major diameter
Pitch diameter
Core diameter

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Machine Design
When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the

Shank
Middle
Thread
Head

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Machine Design
Crushing resistance required to crush the rivet per pitch length is

(p - d) t.σc
n.d.t.σc
p.d.σc
p.t.σc

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Machine Design
Cast iron pipes are mainly used

For conveying steam
All of these
In water and sewage systems
In pressure lubrication systems on prime movers

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

90°
67.5°
45°
22.5°

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Machine Design
The strength of the unriveted plate (P) per pitch length is equal to

p.d.σt
(p - d) t.σt
(p - d) σt
p.t.σt

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