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Machine Design

Machine Design
The contact ratio for gears is

None of these
Less than one
Greater than one
Zero

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Machine Design
The wear load should be __________ the dynamic load.

None of these
Greater than
Equal to
Less than

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Machine Design
The railway carriage couplings have

Square threads
Knuckle threads
Acme threads
Buttress threads

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Machine Design
According to Indian standard specifications, 100 H6/g5 means that the

Difference between the actual size and basic size is 100 mm
Basic size is 100 mm
Actual size is 100 mm
None of these

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Machine Design
A screw is said to be over hauling screw, if its efficiency is

More than 50%
None of these
Equal to 50%
Less than 50%

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Machine Design
A sliding bearing which can support steady loads without any relative motion between the journal and the bearing, is called

Boundary lubricated bearing
Hydrodynamic lubricated bearing
Hydrostatic lubricated bearing
Zero film bearing

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