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Machine Design

Machine Design
The pitch diameter is the __________ diameter of an external or internal screw thread.

Largest
Effective
Smallest
None of these

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Machine Design
18/8 steel contains

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

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Machine Design
The rated life of a bearing varies

Inversely as fourth power of load
Inversely as square of load
Inversely as cube of load
Directly as load

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Machine Design
The stress in the bar when the load is applied suddenly is __________ as compared to the stress induced due to gradually applied loads.

Three times
Double
Same
Four times

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Machine Design
The pipe joint mostly used for pipes carrying water at low pressures is

Nipple joint
Union joint
Spigot and socket joint
Socket joint

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

Less than
Greater than
Equal to
None of these

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