Where does the heat to melt frost come from with a hot-gas defrost system?
a. Latent heat of vaporization
b. Latent heat of fusion
c. Latent heat of condensation
d. Latent heat of discharge
c
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Answer the following statement true (T) or false (F)
Answer the following statement(s) true (T) or false (F)
1. Ohm’s law states I=R/E. 2. If voltage remains constant and resistance increases, current will decrease. 3. In a series circuit, the voltage is the same through each device. 4. In a parallel circuit, the current is the same across each branch.
Given: Study area with four transportation analysis zones, and origin-destination survey results. Provide a trip distribution calculation using the gravity model for two iterations; assume Kij = 1.
What will be an ideal response?
The interior surfaces of ductwork offer resistance to airflow, reducing the __________ of the air moving through it and thus the air conditioning system's operating efficiency.
A. cleanliness B. density C. humidity D. velocity