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Machine Design

Machine Design
The endurance limit for a mirror polished material will be __________ as compared to unpolished material.

None of these
Same
More
Less

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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

1.2 d
1.57 d
0.8 d
1.8 d

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Machine Design
A screw is specified by its

Major diameter
Pitch diameter
Pitch
Minor diameter

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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
Actual size is 100 mm
Basic size is 100 mm
None of these

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Machine Design
The difference between the upper limit and lower limit of a dimension is called

Nominal size
Basic size
Actual size
Tolerance

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Machine Design
When two springs are in series (having stiffness K), the equivalent stiffness will be

2K
K/4
K
K/2

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