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Machine Design

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

Half
Double
None of these
Same

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Machine Design
A steel containing _________ 0.8% carbon is known as hypo-eutectoid steel.

Less than
Greater than
None of these
Equal to

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Machine Design
A tapered key which fits in a key way in the hub and is flat on the shaft, is known as

Gib-head key
Feather key
Wood ruff key
Flat saddle key

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Machine Design
A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be

2.5
3.0
3.5
2.8

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Machine Design
A key capable of tilting in a recess milled out in a shaft is known as

Hollow saddle key
Feather key
Flat saddle key
Woodruff key

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Machine Design
The steel pulleys are __________ in weight than cast iron pulleys of the same capacity.

None of these
Heavier
Moderate
Lighter

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