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Machine Design

Machine Design
The shock resistance of steel is increased by adding

Nickel
Cobalt and molybdenum
Chromium
Nickel and chromium

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Machine Design
In a horizontal flat belt drive, it is customary to use

Idler pulley
Bottom side of belt as slack side
Top side of belt as slack side
None of these

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Machine Design
The static tooth load should be __________ the dynamic load.

Greater than
Less than
None of these
Equal to

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Machine Design
The design calculations for members subject to fluctuating loads with the same factor of safety, yield the most conservative estimates when using

Soderberg relation
Gerber relation
Goodman relation
None of these

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Machine Design
The value of Lewis form factor used in design of gears is

Dependent on system of teeth
Dependent on number of teeth of a gear
Independent of size of teeth
All of these

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

0.2
0.65
0.35
0.5

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