Harmonic mean temperature difference is given by_________________?

A. 2 (?T1 . ?T2)/(?T1 ?T2)

B. 2 (?T1 . ?T2)/(?T1 + ?T2)

C. ?(?T1 . ?T2)

D. (?T1 ?T2)/(?T1 . ?T2)

Be the first to comment if anything wrong with this mcq
Your comment successfully submitted!
It will automatically posted after review and approval by our staff member.