Nate core exam with correct answers 2024

Refrigerant vapors in high concentrations should not be inhaled since they correct answers May cause heart irregularites or unconsciousness What diagrams would you use to find the physical location of the low voltage connection terminals in the unit? correct answers Pictorial diagram The input side of a step down transformer is also properly called the... correct answers Primary side The frame of an electric motor is grounded to.... correct answers Maintain the frame at zero potential A fire extinguisher must have what class rating to extinguish and electrical fire? correct answers Class C. Combustion is what type of process? correct answers Chemical. The damper used with a bypass humidifier must be: correct answers Open in the winter To change the direction of rotation of a fan, driven by a three phase induction motor, it is necessary to: correct answers Reverse the connections of any two motor leads. What is an accurate formula for Ohm's law? correct answers R=E/(divided by)I A ceiling which slopes upward from the walls to the center of the room is referred to as: correct answers Vaulted The primary purpose for bringing outdoor air into a residential air distribution system is to: correct answers Provide fresh air to a conditioned space How should a technician measure resistance with a digital ohmmeter? correct answers Disconnect power, electrically isolate the load, connect leads across the load Why is operating sound a consideration in the location of a unit? correct answers Excessive noise could be disruptive to the customer Why is indoor air cleanliness necessary for comfort? correct answers Air cleanliness affects health and general well being If one end of a copper tube is heated, the other end will soon become very hot also. The heat moves from one end to the other by: correct answers Conduction