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Machine Design

Machine Design
A bench vice has following type of threads

Metric
Buttress
Acme
Square

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Machine Design
A hot short metal is

Ductile at high temperature
Brittle when cold
Brittle under all conditions
Brittle when hot

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Machine Design
When bevel gears having equal teeth and equal pitch angles connect two shafts whose axes intersect at right angle, then they are known as

Internal bevel gears
Angular bevel gears
Miter gears
Crown bevel gears

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Machine Design
Taper usually provided on cotter is

1 in 40
1 in 24
1 in 5
1 in 10

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Machine Design
While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as

Both the ends hinged
One end fixed and the other end free
Both the ends fixed
One end fixed and the other end hinged

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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

Yellow colour
Brown colour
White colour
Grey colour

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