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Machine Design

Machine Design
Rankine's theory of failure is applicable for following type of materials

Brittle
Elastic
Ductile
Plastic

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Machine Design
If the centre distance of the mating gears having involute teeth is increased, then the pressure angle

None of these
Decreases
Remains unchanged
Increases

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

Major diameter
Minor diameter
Pitch diameter
Core diameter

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Machine Design
When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be

Knuckle threads
Square threads
Buttress threads
Acme threads

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Machine Design
18/8 steel contains

18% nickel and 8% chromium
18% chromium and 8% nickel
18% vanadium and 8% nickel
18% nickel and 8% vanadium

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Machine Design
Cast iron pipes are mainly used

For conveying steam
In water and sewage systems
All of these
In pressure lubrication systems on prime movers

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