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Machine Design

Machine Design
Rankine's theory is used for

Ductile materials
Plastic materials
Brittle materials
Elastic materials

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Machine Design
The pitch diameter is the __________ diameter of an external or internal screw thread.

Smallest
Largest
Effective
None of these

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Machine Design
In standard taper roller bearings, the angle of taper of outer raceway is

25°
5°
15°
8°

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Machine Design
In a butt welded joint, the size of weld is __________ the throat of weld.

Double
Equal to
2 times
0.5 times

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Machine Design
An open coiled helical compression spring 'A' of mean diameter 50 mm is subjected to an axial load ‘W’. Another spring 'B' of mean diameter 25 mm is similar to spring 'A' in all respects. The deflection of spring 'B' will be __________ as compared to spring 'A'.

Double
One-half
One-fourth
One-eighth

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Machine Design
Two shafts A and B are made of the same material. The diameter of shaft A is twice as that of shaft B. The power transmitted by the shaft A will be __________ of shaft B.

Four times
Eight times
Twice
Sixteen times

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