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Machine Design

Machine Design
The crest diameter of a screw thread is same as

Minor diameter
Core diameter
Major diameter
Pitch diameter

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Machine Design
The shearing stresses in the inner face as compared to outer face of the wire in a heavy close coiled spring is

Larger
Smaller
Equal
Larger/smaller depending on diameter of spring coil

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Machine Design
In the levers of __________ type, the mechanical advantage is less than one.

Second
None of these
Third
First

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Machine Design
Auto frettage is the method of

Increasing the life of thick cylinders
Joining thick cylinders
Calculating stresses in thick cylinders
Pre-stressing thick cylinders

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Machine Design
The size of a gear is usually specified by

Pressure angle
Circular pitch
Diametral pitch
Pitch circle diameter

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Machine Design
Soderberg relation is based on __________ of the material whereas all other failure relation for dynamic loading are based on ultimate strength of the material.

None of these
Yield strength
Elastic strength
Shear strength

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