How does a hot gas defrost system work?
A) Hot compressor discharge gas is routed to the evaporator.
B) Gas flames provide the heat to melt the ice.
C) A warm glycol solution is sprayed on the coil.
D) The superheated gas leaving the evaporator is used to melt the ice.
A
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A(n) ____________________ rod may be used in welding to add metal to strengthen the bond
Fill in the blank(s) with the appropriate word(s).
The final step when solving equations involving combined operations is to apply the power and root principles of equality if necessary.
Answer the following statement true (T) or false (F)
Why would you use supply registers with curved louvers?
A) The occupants feel less of a draft. B) The system has higher airflow. C) The system operates more efficiently. D) The air disperses throughout the room.
The polarity of a tachometer output signal indicates the direction the device it measures is turning.
Answer the following statement true (T) or false (F)