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Machine Design

Machine Design
The crest diameter of a screw thread is same as

Major diameter
Core diameter
Pitch diameter
Minor diameter

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Machine Design
In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)

d + 17 mm
3.5d
2d + 13 mm
2d + 20 mm

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Machine Design
In designing thick cylinders, the equation used is

Clavarinos' equation
All of these
Lame's equation
Birnie's equation

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Machine Design
When carbon in the cast iron is principally in the form of graphite, the cast iron will be of

Grey colour
Brown colour
White colour
Yellow colour

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Machine Design
A thin spherical shell of internal diameter d is subjected to an internal pressure p. If σt is the tensile stress for the shell material, then thickness of shell is equal to

pd/4σt
pd/3σt
pd/σt
pd/2σt

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Machine Design
When a beam of rectangular cross-section of width b and depth d, is subjected to a shear force F, the maximum shear stress induced will be

2F/bh
F/bh
3F/2bh
4F/bh

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