The atmospheric air at DBT is 20°C. It enters a heating coil which is – McqOptions

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1.	The atmospheric air at DBT is 20°C. It enters a heating coil which is maintained 50°C. If the air leaves the heating coil at 35°C, then what will be the efficiency of the coil?
A.	0.6
B.	0.22
C.	0.35
D.	0.5
Answer» E.

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