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I believe it is the change in area divided by initial area all multiplied by 100.

By formula, Reduction area = [ (Initial Area - Final Area) / Initial Area ] x 100

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How do you calculate tensile strength of rubber dumble?

To calculate the tensile strength of a rubber dumbbell, you first need to prepare a sample according to standard dimensions. Then, using a tensile testing machine, apply a controlled force to the dumbbell until it breaks, while measuring the maximum load (force) it can withstand. The tensile strength is determined by dividing the maximum load at fracture by the cross-sectional area of the dumbbell. The result is usually expressed in units such as megapascals (MPa) or pounds per square inch (psi).


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The term, 'percentage impedance', is a little misleading, as it is defined as 'the value of primary voltage that will cause rated current to flow in the secondary winding, expressed as a percentage of the rated primary voltage'. So, the test is carried out as follows: the secondary winding is short-circuited through an ammeter capable of reading the rated secondary current. A variable voltage is applied to the primary winding. The primary voltage is gradually increased until the ammeter indicates rated secondary current. That primary voltage is then expressed as a percentage of the rated primary voltage -and that value is the transformer's 'percentage impedance'.


How do you calculate volume of irregular shape like the volume of the bucket of an excavator machine?

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Related Questions

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