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Chapter 8 CALCULATION ON PSYCHROMETRIC PROCESSES MCQs

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1. Atmospheric air at 50°F DB and 70% RH is heated along constant dew point to 90°F DB. The process is called:





2. In problem 8.1, the enthalpy of air leaving the heating coil is:





3. The enthalpy change (∆h) in problem 8.1 is:





4. The relative humidity of air leaving the heating coil in problem 8.1 is:





5. The specific volume of air leaving the heating coil in problem 8.1 is:





6. The wet bulb temperature of air leaving the heating coil in problem 8.1 is:





7. In problem 8.2, air is cooled without condensation from 86°F DB and 37% RH to 80% RH. The process is called:





8. The enthalpy change (∆h) in problem 8.2 is:





9. The dry bulb temperature of air leaving the coil in problem 8.2 is:





10. The wet bulb temperature of air leaving the coil in problem 8.2 is:





11. In problem 8.3, air enters a heating coil at 50°F DB & 80% RH at 5300 CFM and is heated to 86°F DB without changing moisture content. The relative humidity of air at exit is:





12. The enthalpy of air leaving the heating coil in problem 8.3 is:





13. The rate of heat transfer for problem 8.3 is:





14. In problem 8.4, atmospheric air at 82°F DB & 63°F WB is cooled to 59°F DB without changing moisture content. The final relative humidity is:





15. The final wet bulb temperature for problem 8.4 is:





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