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Machine Design

Machine Design
Aircraft body is usually fabricated by

Pre-casting
Riveting
Welding
Casting

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Machine Design
In helical gears, the distance between similar faces of adjacent teeth along a helix on the pitch cylinders normal to the teeth, is called

Module
Normal pitch
Axial pitch
Diametral pitch

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

Rubber
Canvas or cotton duck
Leather
Balata gum

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Machine Design
A V-belt designated as B 4430 LP has

4430 mm as diameter of large pulley
4430 mm as diameter of small pulley
4430 mm as centre distance between pulleys
4430 mm as nominal pitch length

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Machine Design
The most important dimension in the design of a nut is

Outside diameter
Inside diameter
Height
Pitch diameter

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Machine Design
When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring)

(4WD/ πd3) × K
(2WD/ πd3) × K
(8WD/ πd3) × K
(WD/ πd3) × K

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