Nate Study Guide Questions and Complete Solutions Graded A+.

What kind of heat transfer does not include solids, or fluids - Answer: Radiation Capillary tubing should be only cut to length using - Answer: Triangular or knife edge file Before beginning any electrical check out procedure, what step should be taken after equipment is disconnected, or breaker is off - Answer: Check for voltage When making a flare. The height of tubing above flare is critical - Answer: Will not fit into nut Dew point - Answer: Temp that water condenses Temperature when describing human comfort - Answer: Dry bulb temperature Pictoral wiring diagram - Answer: Approx equip & location What meter setting should a tech use to determine wether or not contacts are open - Answer: Voltage Ladder schematic is useful for - Answer: Troubleshooting Digital electrical multi meter marked auto ranging will automatically set itself for - Answer: Reading voltage and range when connected to a voltage source To properly test accuracy of thermometer - Answer: It should be emersed in ice & water Lever type tubing benders are best used for - Answer: Soft drawn copper tubing What is represented by the two lines on a ladder diagram - Answer: Each leg of line voltage only Material used over roof beams - Answer: Sheathing Construction fall protection is required when working over what minimum height - Answer: 6 feet What is example of wet bulb thermometer - Answer: Wet moistened cloth wick covering its sensor Technician working around a operating blower should - Answer: Wear tight fitting clothing & remove jewelry, secure long hair Tool specially made to thread a hole in metal is a - Answer: Tap What is a GFCI (Ground Fault Circuit Interrupter) - Answer: Receptical that is used to protect against electrical shocks from appliances and extension cords Symbol - Answer: Open above rise Heat removed changing physical state of object - Answer: Latent heat Sound level - Answer: Decibel RC component - Answer: Run capacitor How is crankcase heater energized - Answer: Only if contacts on compressor is open The primary purpose for bringing outdoor air to a residential system - Answer: Provide fresh air to a conditioned space How should a technician measure resistance with a digital ohmmeter - Answer: Disconnect power, isolate load, connect lead across load Why is operating sound a consideration in location of unit - Answer: Excessive noise can be disruptive to customer Why is indoor air cleanliness necessary for comfort? - Answer: Air cleanliness affects overall health and general well being If one end of a copper tube is heated the other end will be hot also - Answer: Heat moves to other end by conduction Wet bulb and dry bulb measurements are designed to commute - Answer: Relative humidity How much heat is created by 1 watr - Answer: 3.41 What type of residential flooring is over a crawl space - Answer: Pier & beam When working with solvents techs should check SDS - Answer: Safety Data Sheet J94 - Answer: Jack terminal block Refrigerant and high concentrations should not be inhaled since - Answer: It causes heart irregularities and unconsciousness