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In the following equation, P stands for _________

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in Foundry and Forging by (110k points)
In the following equation, P stands for _________

(a) Permeability number

(b) Pressure

(c) Partial Pressure

(d) Partial Fraction

This question was posed to me in examination.

Origin of the question is Moulding Sand Preparation and Conditioning topic in chapter Pattern Materials & Moulding Sand Tests of Foundry and Forging

1 Answer

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Best answer
The correct answer is (a) Permeability number

Easiest explanation: The equation given above is the standard equation for the measurement of the permeability number. After preparing the test sample of sand, 2000 cm3 of air is passed through the sample and the time taken by it to completely pass through the specimen is noted. Then its permeability is calculated using the above equation.

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