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Machine Design

Machine Design
The contact ratio for gears is

Zero
None of these
Greater than one
Less than one

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Machine Design
Pick up wrong statement. Fatigue strength can be increased by

Shot peening
Grinding and lapping surface
Hot working
Cold working

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Machine Design
Rankine's theory of failure is applicable for following type of materials

Elastic
Brittle
Ductile
Plastic

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Machine Design
The stretching in a belt can be controlled by __________ the stress in the belt.

Both A and B
None of these
Reducing
Increasing

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Machine Design
Basic hole is one

Whose lower as well as upper deviations are zero
Does not exist
Whose lower deviation is zero
Whose upper deviation is zero

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Machine Design
In a boundary lubricated bearing, there is a __________ of lubricant between the journal and the bearing.

Thick film
None of these
Thin film
Either A or B

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