NATE Core Exam Practice Questions and answers 2023/24

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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer 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 - correct answer b) Bourdon tube .......................................................................