If h₁ = inner film co-efficient and /h₂ = outer film co-efficient – McqOptions

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1.	If h₁ = inner film co-efficient and /h₂ = outer film co-efficient, then the overall heat transfer co-efficient is
A.	Always less than h₁
B.	Always between h₁ and h₂
C.	Always higher than h₂
D.	Dependent on metal resistance
Answer» C. Always higher than h₂

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