Harmonic mean temperature difference is given by Options: A . &nbsp`sqrt( Delta T_1 . Delta T_2)` B . &nbsp`(2 Delta_1.Delta_2)/((DeltaT_1 + DeltaT_2))` C . &nbsp`(2 Delta_1.Delta_2)/((DeltaT_1 - DeltaT_2))` D . &nbsp`(Delta T_1 - Delta T_2)/(Delta T_1 .DeltaT_2)`

Harm

Question

Harmonic mean temperature difference is given by

Options:

A . `sqrt( Delta T_1 . Delta T_2)`

B . `(2 Delta_1.Delta_2)/((DeltaT_1 + DeltaT_2))`

C . `(2 Delta_1.Delta_2)/((DeltaT_1 - DeltaT_2))`

D . `(Delta T_1 - Delta T_2)/(Delta T_1 .DeltaT_2)`

Answer: Option B

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