Refrigerant in the evaporator coil of an air conditioner changes from a liquid to a gas when hot air passes over it. The temperature of the refrigerant does not change. What concept does this demonstrate?
A) Specific heat B) Radiation C) Latent heat D) Convection
C
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If a technician uses a scan tool to open the EGR valve while the engine is at idle:
A. The engine will immediately idle rough. B. The technician may be able to see the results of the command using the scan tool. C. An EGR system DTC may set. D. Both A and B
A dry well is most commonly used as part of a(n) ____________________ system.
Fill in the blank(s) with the appropriate word(s).
A ____________ system has no connection to the local electric utility’s grid system and is used when a home owner wants to be totally independent from the electric utility.
a. stand-alone b. grid-tied c. hybrid d. high-voltage
Traction control is being discussed. Technician A says that the computer locks both drive wheels together when one drive wheel starts to slip. Technician B says that first the brakes are applied then the engine power is reduced. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B