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Machine Design

Machine Design
When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is

0.35
0.5
0.2
0.65

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Machine Design
When the pulley or other mating piece is required to slide along the shaft, a __________ sunk key is used.

Square
None of these
Parallel
Rectangular

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Machine Design
The function of cutting oil when threading a pipe is to

All of these
Help removes chips
Lubricate the dies
Provide cooling action

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Machine Design
If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio

Remains unchanged
Increases
None of these
Decreases

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Machine Design
A cotter joint is used to connect two __________ rods.

Co-axial
Parallel
None of these
Perpendicular

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Machine Design
Which of the following pipe joints would be suitable for pipes carrying steam?

Flanged
Expansion
Threaded
Bell and spigot

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