NATE Core Exam Practice Questions with Correct Solutions | Rated A+

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 orders so that office staff, other technicians, and customers will know what work you completed on the job. a) clear b) complete c) concise d) all of the above - d) all of the above Ch. 1-3 When explaining to a customer that you have topped off the system charge, which of the following terms is most appropriate? a) freon b) gas c) juice d) refrigerant - d) refrigerant Ch. 1-4 Listening carefully to what a customer is telling you _______. a) can help you diagnose the problem b) is a waste of time c) is not necessary d) often will only confuse you - a) can help you diagnose the problem Ch. 1-5 When you arrive at a service call and meet the customer, you should ______. a) ask questions first, then listen to what the customer has to say b) listen to the customer first, then ask questions c) avoid discussion with the customer d) remind the customer that you are the professional and get on with your work - b) listen to the customer first, then ask questions Ch. 1-6 What is the volume of a room that measures 10 ft by 20 ft with an 8 ft ceiling? a) 800 ft^3 b) 1,600 ft^3 c) 2,400 ft^3 d) 3,200 ft^3 - b) 1,600 ft^3 Ch. 1-7 What is the cfm requirement for an 1,800 ft^2 house with 8 ft ceilings, if five air changes per hour are needed? a) 400 cfm b) 1,200 cfm c) 1,600 cfm d) 1,600 cfm - b) 1,200 cfm Ch. 1-8 What is the cfm requirement for a 2,400 ft^2 house with 8 ft ceilings, if five air changes per hour are needed? a) 400 cfm b) 1,200 cfm c) 1,600 cfm d) 2,400 cfm - c) 1,600 cfm Ch. 1-9 What is the cross sectional area of a 10 in. round metal duct? a) 79 in.^2 b) 200 in.^2 c) 314 in.^2 d) 418 in.^2 - a) 79 in.^2 Ch. 1-10 How fast does air with a velocity pressure of 0.20 in. w.g. move through a round duct? a) 400 ft/min b) 1,200 ft/min c) 1,600 ft/min d) 1,800 ft/min - d) 1,800 ft/min Ch. 1-11 How fast does air with a velocity pressure of 0.20 in. w.g. move through a square duct? a) 400 ft/min b) 1,200 ft/min c) 1,600 ft/min d) 1,800 ft/min - d) 1,800 ft/min Ch. 1-12 Customers depend on you to be ______. a) honest b) loyal c) patient d) all of the above - d) all of the above Ch. 1-13 Before leaving a service call, you should be sure to ______. a) ask the customer for referrals b) collect payment in cash if possible c) demonstrate system operation and describe basic maintenance procedures to the customer d) try to sell the customer an equipment upgrade - c) demonstrate system operation and describe basic maintenance procedures to the customer Ch. 2-1 What is the advantage of using a tube cutter to cut copper pipe? a) it can cut hard or soft drawn copper b) it leaves no metal shavings to contaminate the system c) it produces a clean, square cut d) all of the above - d) all of the above Ch. 2-2 Spring-type benders may be used on ______. a) soft drawn copper b) hard drawn copper c) all copper pipe d) steel pipe - a) soft drawn copper Ch. 2-3 A flaring tool is used to ______. a) make a mechanical joint in tubing b) measure pipe diameters c) remove burrs from piping d) separate pipe fittings - a) make a mechanical joint tubing Ch. 2-4 A swagging tool is used to ______. a) cut copper tubing b) make a mechanical joint in tubing c) remove burrs from piping d) solder tubing without the use of couplings - d) solder tubing without the use of couplings Ch. 2-5 What is one of the advantages of a glass-stem thermometer? a) it is very accurate b) it is very durable c) it comes with a digital readout d) none of the above - a) it is very accurate Ch. 2-6 In discussing human comfort, the temperature most commonly referred to is ______. a) dew point b) dry-bulb c) wet-bulb d) Fahrenheit - b) dry-bulb Ch. 2-7 A sling psychrometer uses two glass-stem thermometers. One measures dry-bulb, and the other measures _______. a) dew point b) enthalpy c) relative humidity d) wet-bulb - d) wet-bulb Ch. 2-8 A standard refrigeration manifold uses what type of element to measure pressure? a) Bellows b) Bourdon tube c) Diaphragm d) Spring - b) Bourdon tube Ch. 2-9 What is the pressure range of a standard compound gauge on a refrigeration mainfold? a) 0 to 350 psig b) 0 to 500 psig c) 30 in. Hg to 350 psig d) 30 in. Hg to 500 psig - c) 30 in. Hg to 350 psig Ch. 2-10 What is the best tool for removing moisture and noncondensibles from a system before adding refrigerant? a) Manifold gauge b) Micron analyzer c) Recovery machine d) Vacuum pump - d) Vacuum pump Ch. 2-11 A vacuum gauge reads pressure in ______. a) inches of mercury b) microns c) psia d) psig - b) microns Ch. 2-12 Which of the following is NOT a method of leak detection? a) soap bubbles b) electronic c) micronic d) ultrasonic - c) micronic Ch. 2-13 To prevent the release of refrigerant to the atmosphere while removing it from a system, what type of equipment must be used? a) Recovery machine b) Recycling machine c) Reclaim machine d) Vacuum pump - a) Recovery machine