According to fan laws, which of the following relation is valid? (Q \[-\] discharge, N \[-\] speed, D \[-\] diameter) Subscripts 1 and 2 for two sets of conditions):

\[\left( \frac{{{Q}_{1}}}{{{Q}_{2}}} \right)={{\left( \frac{{{N}_{1}}}{{{N}_{2}}} \right)}^{2}}\]

\[\left( \frac{{{Q}_{1}}}{{{Q}_{2}}} \right)={{\left( \frac{{{N}_{1}}}{{{N}_{2}}} \right)}^{3}}\]

\[\left( \frac{{{Q}_{1}}}{{{Q}_{2}}} \right)={{\left( \frac{{{D}_{1}}}{{{D}_{2}}} \right)}^{2}}\]

\[\left( \frac{{{Q}_{1}}}{{{Q}_{2}}} \right)={{\left( \frac{{{D}_{1}}}{{{D}_{2}}} \right)}^{3}}\]

According to fan laws, which of the following relation is valid? (Q \[

1.	According to fan laws, which of the following relation is valid? (Q \[-\] discharge, N \[-\] speed, D \[-\] diameter) Subscripts 1 and 2 for two sets of conditions):
A.	\[\left( \frac{{{Q}_{1}}}{{{Q}_{2}}} \right)={{\left( \frac{{{N}_{1}}}{{{N}_{2}}} \right)}^{2}}\]
B.	\[\left( \frac{{{Q}_{1}}}{{{Q}_{2}}} \right)={{\left( \frac{{{N}_{1}}}{{{N}_{2}}} \right)}^{3}}\]
C.	\[\left( \frac{{{Q}_{1}}}{{{Q}_{2}}} \right)={{\left( \frac{{{D}_{1}}}{{{D}_{2}}} \right)}^{2}}\]
D.	\[\left( \frac{{{Q}_{1}}}{{{Q}_{2}}} \right)={{\left( \frac{{{D}_{1}}}{{{D}_{2}}} \right)}^{3}}\]
Answer» E.

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According to fan laws, which of the following relation is valid? (Q \[-\] discharge, N \[-\] speed, D \[-\] diameter) Subscripts 1 and 2 for two sets of conditions):

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