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Machine Design

Machine Design
The material generally used for aircraft components is

High speed steel
Aluminium
Stainless steel
Mild steel

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Machine Design
The bearing characteristic number in a hydrodynamic bearing depends upon

Length, width and load
Length, width and speed
Viscosity, speed and load
Viscosity, speed and bearing pressure

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Machine Design
The edges of a boiler plate are bevelled to an angle of

80°
30°
60°
45°

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Machine Design
The dynamic tooth load is due to

Deflections of teeth under load
All of these
Irregularities in tooth profiles
Inaccuracies of tooth spacing

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Machine Design
In V-belt drive, belt touches

Both at bottom and sides
Could touch anywhere
At bottom
At sides only

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Machine Design
The resilience of a bolt may be increased by

Decreasing its length
Increasing its shank diameter
Decreasing its shank diameter
Increasing its length

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