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Machine Design

Machine Design
In a marine flange coupling, the pitch circle diameter of bolts is taken as

2 d
1.6 d
1.2 d
2.5 d

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Machine Design
The maximum shear stress theory is used for

Brittle materials
Nonferrous materials
Plastic materials
Ductile materials

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Machine Design
Resistance to fatigue of a material is measured by

Elastic limit
Endurance limit
Young's modulus
Coefficient of elasticity

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Machine Design
The design of the pressure vessel is based on

Longitudinal stress
Hoop stress
Longitudinal and hoop stress
None of these

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Machine Design
According to I.B.R., the thickness of the boiler shell should not be less than

5 mm
6 mm
7 mm
4 mm

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Machine Design
In a steam engine, the piston rod is usually connected to the cross-head by means of a

Cotter joint
Oldham coupling
Knuckle joint
Universal joint

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