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Machine Design

Machine Design
The product of the diametral pitch and circular pitch is equal to

π
1/π
1
π × number of teeth

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Machine Design
The valve rod in a steam engine is connected to an eccentric rod by

Cotter joint
Bolted joint
Universal coupling
Knuckle joint

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Machine Design
The constant factor in case of R10 series of preferred numbers is

1.58
1.26
1.06
1.12

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Machine Design
The helix angle for single helical gears ranges from

35° to 50°
10° to 15°
15° to 20°
20° to 35°

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Machine Design
The material generally used for aircraft components is

High speed steel
Stainless steel
Aluminium
Mild steel

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Machine Design
A column of length l is fixed at both ends. The equivalent length of the column is

l/√2
2 l
l
l/2

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