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Machine Design

Machine Design
A bench vice has following type of threads

Square
Acme
Metric
Buttress

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Machine Design
Tensile strength of a mild steel specimen can be roughly predicted from following hardness test

Brinell
None of these
Vickers
Rockwell

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Machine Design
The design of shafts made of brittle materials is based on

Von Mises theory
Guest's theory
St Venant's theory
Rankine's theory

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Machine Design
A V-belt designated as B 4430 LP has

4430 mm as diameter of small pulley
4430 mm as diameter of large pulley
4430 mm as centre distance between pulleys
4430 mm as nominal pitch length

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Machine Design
The belt slip occurs due to

Loose belt
Heavy load
Driving pulley too small
Any one of the above

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Machine Design
The helix angle for single helical gears ranges from

35° to 50°
15° to 20°
20° to 35°
10° to 15°

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