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Machine Design

Machine Design
If two springs are in parallel then their overall stiffness will be

Half
None of these
Same
Double

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Machine Design
For a square key made of mild steel, the shear and crushing strength are related as

Shear strength is less than crushing strength
None of these
Shear strength is equal to crushing strength
Shear strength is greater than crushing strength

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Machine Design
For crank shaft bearings, the ratio of the length of the journal to its diameter is_________.

Greater than unity
Equal to 1
Less than unity
None of these

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Machine Design
The application of second type levers is found in

A pair of tongs
Hand wheel of a punching press
Handle of a hand pump
Lever of a loaded safety valve

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Machine Design
When the length of the journal is equal to the diameter of the journal, then the bearing is said to be a

Square bearing
Long bearing
Short bearing
Medium bearing

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Machine Design
A locking device in which the bottom cylindrical portion is recessed to receive the tip of the locking set screw, is called

Ring nut
Sawn nut
Castle nut
Jam nut

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