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Machine Design

Machine Design
A screw is specified by its

Pitch diameter
Minor diameter
Major diameter
Pitch

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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.

Eight times
Four times
Twice
Sixteen times

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Machine Design
If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, then formative number of teeth is written as

T sec³φ
T sec²φ
T/sec³φ
T cosecφ

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Machine Design
A riveted joint is a __________ fastening.

None of these
Temporary
Permanent
Either A or B

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Machine Design
The fatigue life of a part can be improved by

Coating
Polishing
Shot peening
Electroplating

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Machine Design
Rankine's theory of failure is applicable for following type of materials

Ductile
Plastic
Elastic
Brittle

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