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Machine Design

Machine Design
The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be

44047
43869
43929
44045

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Machine Design
The allowable static stress for steel gears is approximately __________ of the ultimate tensile stress.

One-third
Double
One-half
One-fourth

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Machine Design
The connecting rod bolts are tightened up so that tightening stress

Is 50% of yield point
Is just sufficient to hold parts together
Is about yield point divided by safety factor
Approaches yield point

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Machine Design
In nitrated parts, the origins of the fatigue cracks will occur at

None of these
Just below the surface
Surface
Within the core

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Machine Design
Three different weights fall from a certain height under vacuum. They will take

Times proportional to weight to reach earth
None of these
Same time to reach earth
Times inversely proportional to weight to reach earth

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Machine Design
The material used for brake lining should have __________ coefficient of friction.

None of these
Low
High
Moderate

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