NATE EXAM QUESTIONS WITH CORRECT ANSWERS

An air conditioning technician is working in the basement of a large B37public building. The technician notices several unsafe and dangerous conditions. Of the following conditions that are noticed, which is the most dangerous and should be reported immediately? A: Gas leaking from a cracked pi...

1kwh of electric power is equivalent to ___ btu per hour. A. 3142 B. 6412 C. 9412 D. 6812 - A Gas valves operate at ____ voltage. A. 120v B. 230v C. 24v D. 12v - C What will be the resistance in the circuit if the supply voltage is 30v and current flowing through the circuit is 5...

Ch. 1-1 The ability to utilize all types of communication skills is ________ to the HVACR technician. a) not as important as "hands-on" technical skills b) somewhat important c) unimportant d) very important - d) very important Ch. 1-2 It is important to be _______ in filling out service ...

In HVACR terms, what is a feature? - A special characteristic of a product. In HVACR terms, what is a benefit? - The value the customer receives from using the feature What type of temperature is often used by customers when discussing human comfort? - Dry bulb What is an honest person? ...

Why would you want to introduce fresh air into an occupied residential structure? - To create a neutral pressure within building. A ducted distribution system that is not in the conditioned space and is well sealed on the supply side but has numerous leaks on the return side can create? - A pos...

Relative humidity - a sling psychrometer can measure wet bulb and dry bulb temperature. These measurements are then used to compute? A. Comfort index. B. System temperature differential. C. Relative humidity. D. Sub cooling Sling psychrometers. - because they are very accurate, liquid filled ...

Honest Person - Is free from fraud and deception, is credible, is marked with integrity, and is fair in their dealings with others Legally binding agree - Must always be in writing Department of Transportation - Responsible for the shipping and labeling of all refrigerants Dry Bulb Tempe...

When explaining to a customer that you have topped off the system charge, which of the following terms is most appropriate? - Refrigerant It is important to be _____ in filling out service orders so that office staff, other technicians, and customers will know what work you completed on the job....

Mineral oils are not to be used with HFC alternate refrigerants: - True Flue gas temperatures at which the high-efficiency furnaces operate typically is: - 100 to 275 degrees Which of the following type of controllers are used in HVAC applications: - PI According to ASME, safety valve of...

D (very important) - The ability to utilize all types of communication skills is ____ to the HVACR technician. A. Not as important as "hands-on" technical skills B. Somewhat important C. Unimportant D. Very important D (all of the above: clear, complete, concise) - It is important to be _...

What are the five basic components to any schematic? - 1. A power supply 2. A path for the power 3. A load or component that operates from the power. 4. A switch or component that interrupts the power to the load. 5. A legend or key that explains what the various symbols and abbreviations used ...

Which of the following is not the product of incomplete combustion: - Oxides of nitrogen An oil trap is required at the base of the discharge line of the vertical riser is _____ or above - 8 feet A diode allows current to flow in one direction: - True 1 Watt = _____ Btu - 3.41 Curren...

Which of the following factors affects a customer's level of comfort? a. Air movement b. Humidity c. Temperature d. All of the above - d (All of the above: air movement, humidity, temperature) A cooling load calculation estimates the sensible heat gain of a structure. The maximum sensible...

What electro-mechanical control would you use on a cap tube or automatic expansion valve system to maintain the space temperature? - C: A thermostatic control Open motors are designed to operate at a given temperature rise as indicated on the motor nameplate. What does this mean? - A: indicates...