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Machine Design

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

n.d.t.σc
p.t.σc
(p - d) t.σc
p.d.σc

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Machine Design
Aircraft body is usually fabricated by

Casting
Pre-casting
Riveting
Welding

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Machine Design
A sliding bearing which operates without any lubricant present, is called

Hydrostatic lubricated bearing
Hydrodynamic lubricated bearing
Boundary lubricated bearing
Zero film bearing

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Machine Design
A steel containing up to 0.15% carbon is known as

High carbon steel
Dead mild steel
Medium carbon steel
Mild steel

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Machine Design
18/8 steel contains

18% chromium and 8% nickel
18% nickel and 8% chromium
18% vanadium and 8% nickel
18% nickel and 8% vanadium

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Machine Design
When a shaft is subjected to combined twisting moment (T) and bending moment (M), then the equivalent twisting moment is equal to

√(M² + T²)
M + √(M² + T²)
(1/2) × √(M² + T²)
(1/2) × [M + √(M² + T²)]

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