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Machine Design

Machine Design
Rankine's theory is used for

Plastic materials
Brittle materials
Elastic materials
Ductile materials

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Machine Design
Which of the following screw thread is adopted for power transmission in either direction?

Square threads
Multiple threads
Buttress threads
Acme threads

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Machine Design
A riveted joint is a __________ fastening.

Temporary
Either A or B
None of these
Permanent

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Machine Design
A shaft is subjected to fluctuating loads for which the normal torque (T) and bending moment (M) are 1000 N-m and 500 N-m respectively. If the combined shock and fatigue factor for bending is 1.5 and combined shock and fatigue factor for torsion is 2, then the equivalent twisting moment for the shaft is

2100 N-m
2000 N-m
2136 N-m
2050 N-m

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Machine Design
The following type of nut is used with alien bolt

Castle nut
Any one of the above
Slotted nut
Hexagonal nut

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Machine Design
The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub)

d/2
d/4
d/6
d/8

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