The heat sink for a heat pump is:
A) Always air.
B) The warm medium that the condenser rejects heat into.
C) The cool medium that the evaporator draws heat out of.
D) Always water.
B
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What type of valve is a flow-regulating device that uses a disc-shaped flow-control element to increase or decrease flow?
A) Ball check valve B) Lift check valve C) Swing check valve D) Gate valve
Two technicians are discussing oil leaks. Technician A says that an oil leak can be found using a fluorescent dye in the oil with a black light to check for leaks. Technician B says a white spray powder can be used to locate oil leaks. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
This charge offsets the impact of a new house on existing infrastructure and covers installation costs incurred by the municipality
A) Utilities fee B) Tap fee C) Impact fee D) Permit fee
Three capacitors, a 12 ?F, a 20 ?F, and a 30 ?F, are connected in series to a 60 Hz source. What is the total XC?
A. 226.42 ? B. 342.78 ? C. 442.09 ? D. 566.32 ?