If H1 = Inner Film Co-Efficient and /H2 = Outer

question 41

Multiple Choice

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

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