question_answer

   Consider the following statements:          

In psychrometry, wet-bulb temperature is a measure enthalpy of moist air, so that in the psychrometric chart:

1. The constant enthalpy lines are also constant bulb temperature lines.

2. The wet-bulb and dry bulb temperature are same at any condition

3. The wet-bulb and dry-bulb temperature are equal at saturation condition.

Of these statements:                       

A) 1 alone is correct       

B) 1 and 2 are correct                   

C) 1 and 3 are correct                    

D) 2 and 3 are correct