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Machine Design

Machine Design
Gears are casted by

Sand mould casting
Slush casting
Centrifugal casting
Permanent mould casting

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Machine Design
The draw of cotter need not exceed

10 mm
20 mm
5 mm
3 mm

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Machine Design
The velocity factor for precision metallic gears cut with high accuracy and operating at velocities up to 20 m/s is equal to

6/ (6 + v)
3/ (3 + v)
0.75/ (0.75 + √v)
4.5/ (4.5 + v)

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Machine Design
In designing thick cylinders, the equation used is

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

Brown colour
Yellow colour
White colour
Grey colour

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Machine Design
The velocity factor for ordinary cut gears operating at velocities up to 12.5 m/s is equal to

6/(6 + v)
3/(3 + v)
0.75/(0.75 + √v)
4.5/(4.5 + v)

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