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Machine Design

Machine Design
When a close coiled helical spring is compressed, its wire is subjected to

Shear
All of these
Compression
Tension

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Machine Design
Rivets are generally specified by

Length of rivet
Nominal diameter
Diameter of head
Thickness of plates to be riveted

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Machine Design
The algebraic difference between the maximum limit and the basic size is called

Upper deviation
Mean deviation
Lower deviation
Actual deviation

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Machine Design
Which of the following bearing is preferred for oscillating conditions?

Angular contact single row ball bearing
Taper roller bearing
Needle roller bearing
Double row roller bearing

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Machine Design
A sliding bearing in which although lubricant is present, the working surfaces __________ contact each other at least part of the time, is called boundary lubricated bearing.

None of these
Fully
Partially
Either A or B

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Machine Design
When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is

Direct shear stress only
A combination of bending stress and direct shear stress
Bending stress only
A combination of torsional shear stress and bending

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