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Machine Design

Machine Design
A screw is specified by its

Pitch diameter
Pitch
Minor diameter
Major diameter

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Machine Design
Stress concentration in static loading is more serious in

Brittle materials
Depends on other factors
Equally serious in both cases
Ductile materials

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Machine Design
Gears are casted by

Permanent mould casting
Slush casting
Centrifugal casting
Sand mould casting

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Machine Design
According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width (5 rivets per pitch length) should be

63 to 70%
80 to 90%
45 to 60%
70 to 83%

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

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

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Machine Design
Deep groove ball bearings are used for

Radial load at high speed
Combined thrust and radial loads at high speed
Heavy thrust load only
Small angular displacement of shafts

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MORE MCQ ON Machine Design

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