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An air water system was analysed and found to have a dry bulb temperature of 30 ­­0C content of 210 grains of water per lb dry air. Percent relative humidity is    a. 31    b. 60   c. 40  d. 53 The system has an approximate saturated enthalpy of ___ Btu/lb dry air. a. 52.63   b. 64.69    c. 75.50   d. 87.30

An air water system was analysed and found to have a dry bulb temperature of 30 ­­0C content of 210 grains of water per lb dry air. Percent relative humidity is    a. 31    b. 60   c. 40  d. 53 The system has an approximate saturated enthalpy of ___ Btu/lb dry air. a. 52.63   b. 64.69    c. 75.50   d. 87.30

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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An air water system was analysed and found to have a dry bulb temperature of 30 ­­0C content of 210 grains of water per lb dry air.

  • Percent relative humidity is

   a. 31    b. 60   c. 40  d. 53

  • The system has an approximate saturated enthalpy of ___ Btu/lb dry air.

a. 52.63   b. 64.69    c. 75.50   d. 87.30

  • The humid volume of the air-water mixture is ____ cubic feet per pound of dry air.

a. 12.3     b. 16.4     c. 15.6    d. 17.8

  • At ___ F the mixture will show its first condensate.

a.  65.5   b. 72.3    c. 98.7   d. 88.9

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