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Machine Design

Machine Design
Gears are casted by

Sand mould casting
Permanent mould casting
Slush casting
Centrifugal casting

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Machine Design
In helical bevel gearing, the axes of shafts are __________ and the teeth are curved.

Intersecting and non-parallel
Non-intersecting and non-parallel
None of these
Intersecting

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Machine Design
When a helical compression spring is cut into halves, the stiffness of the resulting spring will be

One-half
Double
One-fourth
Same

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Machine Design
Which of the following pipe joints would be suitable for pipes carrying steam?

Bell and spigot
Threaded
Flanged
Expansion

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Machine Design
A backing ring is used inside the pipe joint when making a

Sleeve weld
Fillet weld
Butt weld
Socket weld

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Machine Design
The resultant axial load on a bolt depends upon

External load applied
All of these
Initial tension due to tightening of the bolt
Relative elastic yielding of the bolt and the connected members

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