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Machine Design

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

Double
Half
Same
None of these

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

Thin film
None of these
Thick film
Either A or B

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Machine Design
When the pulley or other mating piece is required to slide along the shaft, a __________ sunk key is used.

Square
Parallel
Rectangular
None of these

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

Shot peening
Cold working
Hot working
Grinding and lapping surface

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

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

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Machine Design
When the material of key and shaft is same, and the width of key is one-fourth of the diameter of shaft (d), then length of key will be

1.8 d
0.8 d
1.57 d
1.2 d

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