If an HVAC control panel is equipped with a recirculation feature it means that:
A. When activated the recirculation door is closed preventing dust and contaminants from entering the cab.
B. Cooling time when air conditioning is selected will be lower.
C. The recirculation feature will not operate in the defrost mode.
D. All of the above statements are true in regards to the recirculation feature.
Answer: D
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Answer the following statement(s) true (T) or false (F)
1. In most cases, when soldering a joint, very little solder is needed. 2. Characteristics of an overheated solder connection include de-wetting, lumps, dull, crystalline-like, and looks as though sand has been thrown into the joint. 3. When you are not using your iron, never leave a large lump of solder on the tip. 4. Flux prevents oxidation and removes the thin layer of oxide and the atmospheric gas layer from the area to be soldered. 5. Poor wetting is usually the result of poor cleaning procedures or lack of sufficient heat.
The number of positions used by a two-lever control backhoe stick-and-bucket lever is _____.
a. two b. three c. four d. five
A feeder circuit with no motor load has a continuous load of 5A and a noncontinuous load of 5A. The feeder overcurrent protective device should be sized at _____.
a. 10A b. 11.25A c. 15A d. 17.5A
Describe self-clinching fasteners.
What will be an ideal response?