Harmonic Mean Temperature Difference Is Given by

question 50

Multiple Choice

Harmonic mean temperature difference is given by

• A)?(?T1 . ?T2)
• B)2 (?T1 . ?T2)/(?T1 + ?T2)
• C)2 (?T1 . ?T2)/(?T1 - ?T2)
• D)(?T1 - ?T2)/(?T1 . ?T2)

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