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Machine Design

Machine Design
Fibrous fracture occurs in

Hard material
Elastic material
Ductile material
Brittle material

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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

Acme threads
Knuckle threads
Square threads
Buttress threads

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Machine Design
In a turnbuckle, if one of the rods has left hand threads, then the other rod will have

Right hand threads
Pointed threads
Left hand threads
Multiple threads

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Machine Design
The relation between the pitch of the chain (p) and pitch circle diameter of the sprocket (D) is given by (where T = Number of teeth on the sprocket)

p = D sin (360°/T)
p = D sin (90°/T)
p = D sin (120°/T)
p = D sin (180°/T)

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Machine Design
When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant load on the bolt will be equal to the

External load applied
Initial tension or external load, whichever is greater
Initial tension
Sum of the initial tension and external load applied

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Machine Design
A riveted joint is a __________ fastening.

Permanent
None of these
Either A or B
Temporary

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