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Machine Design

Machine Design
For a shaft diameter of 200 mm, the number of bolts in a marine flange coupling should be

4
6
8
10

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Machine Design
The stress which vary from a minimum value to a maximum value of the same nature (i.e. tensile or compressive) is called

Fluctuating stress
Yield stress
Repeated stress
Alternating stress

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Machine Design
The permissible stress for carbon steel under static loading is generally taken as

3000-4000 kg/cm²
2000-3000 kg/m²
7500-10,000 kg/cm²
4000-4500 kg/cm²

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Machine Design
In cylindrical cams, the follower moves

In a direction perpendicular to the cam axis
In any direction irrespective of cam axis
In a direction parallel to the cam axis
Along the cam axis

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Machine Design
According to Indian standard specifications, a Grey cast iron designated by 'FG 200' means that the

Carbon content is 2%
Maximum shear strength is 200 N/mm²
Minimum tensile strength is 200 N/mm²
Maximum compressive strength is 200 N/mm²

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Machine Design
Deep groove ball bearings are used for

Heavy thrust load only
Small angular displacement of shafts
Combined thrust and radial loads at high speed
Radial load at high speed

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