Heisler charts are valid if

1.	Heisler charts are valid if
A.	Fourier number is equal to 0.2
B.	Fourier number is less than 0.2
C.	Fourier number is greater than 0.2
D.	Fourier number is equal to 0.4
Answer» D. Fourier number is equal to 0.4

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Heisler charts are valid if
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Heisler charts are valid if

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