Mineral deposits in the water portion of a water-cooled condenser act as ____.
A. a conductor of heat
B. an insulator
C. a cleaning solution
D. They have no effect on the operation of the condenser.
Answer: B
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¿Cuál de los siguientes materiales de revestimiento es la barrera impermeable más usada sobre el aislamiento de tuberías para las aplicaciones al aire libre?
a. Plástico b. Acero c. Aluminio d. Laminar
You built a deck 12 feet by 16 feet. You used 6-inch deck boards running the length of the deck.
a. What is the area of the deck? b. How many of what length deck boards are needed?
Which of the following wiring methods and equipment grounding conductor combinations are permitted in a patient care area of a health care facility?
A. Electrical metallic tubing (EMT) with a 14 AWG copper equipment grounding conductor B. Rigid polyvinyl chloride conduit (PVC) conduit with a 12 AWG copper equipment grounding conductor C. “Traditional” Type MC cable with a 12 AWG equipment grounding conductor D. Type AC cable with a 12 AWG equipment grounding conductor
The_____ effect occurs when AC induces eddy currents into the conductor, which cause the electrons to be repelled toward the outer surface of the conductor.
A. insulation B. phasing C. skin D. resistance