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[Show more]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 t...
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Add to cartd (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 t...
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...
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Add to cartAn 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...
The following expresses the difference between a feature and a benefit: - -A feature is a special characteristic of a product -A benefit is the value the customer receives from using the feature. 
 
The temperature most often used by customers when discussing human comfort is: - -A dry bulb re...
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Add to cartThe following expresses the difference between a feature and a benefit: - -A feature is a special characteristic of a product -A benefit is the value the customer receives from using the feature. 
 
The temperature most often used by customers when discussing human comfort is: - -A dry bulb re...
Class A - Ordinary Extinguisher 
 
Class B - Liquid Extinguisher 
 
Class C - Electrical Extinguisher 
 
Asphyxiation causes what? - Nausea, Dizziness, Heart Irregularities, and Unconciousness 
 
Ladder must be at what dimensions in relation to a house? - 4 ft for every 1 ft, 3 ft abo...
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Add to cartClass A - Ordinary Extinguisher 
 
Class B - Liquid Extinguisher 
 
Class C - Electrical Extinguisher 
 
Asphyxiation causes what? - Nausea, Dizziness, Heart Irregularities, and Unconciousness 
 
Ladder must be at what dimensions in relation to a house? - 4 ft for every 1 ft, 3 ft abo...
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...
Preview 2 out of 12 pages
Add to cartAn 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...
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 servic...
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Add to cartCh. 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 servic...
Low airflow over a residential split system air conditioning evaporator can cause 
 
 A: Liquid flood-back to the compressor 
 
 B: A decrease in compression ratio 
 
 C: An increase in suction line superheat 
 
 D: Oil logging in the evaporator - A: Liquid flood-back to the compressor 
 
Whic...
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Add to cartLow airflow over a residential split system air conditioning evaporator can cause 
 
 A: Liquid flood-back to the compressor 
 
 B: A decrease in compression ratio 
 
 C: An increase in suction line superheat 
 
 D: Oil logging in the evaporator - A: Liquid flood-back to the compressor 
 
Whic...
Heat Anticipators - Are wired in series 
 
Cooling anticipators - Are wired parallel 
 
Low pressure switches detects - a loss of refrigerant 
 
Low pressure switches de energizes - the compressor 
 
Electronic air cleaners do not - remove odors 
 
Electronic air cleaners normally are...
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Add to cartHeat Anticipators - Are wired in series 
 
Cooling anticipators - Are wired parallel 
 
Low pressure switches detects - a loss of refrigerant 
 
Low pressure switches de energizes - the compressor 
 
Electronic air cleaners do not - remove odors 
 
Electronic air cleaners normally are...
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 sensib...
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Add to cartWhich 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 sensib...
On an R-22 system, line diameters and lengths are typically specified for a vapor pressure drop that does not exceed what? - 6-7PSI or 6F 
 
What is the primary purpose of using flux when soldering copper or brass parts? - Prevent Oxidation 
 
The water that results from a defrost cycle of an ...
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Add to cartOn an R-22 system, line diameters and lengths are typically specified for a vapor pressure drop that does not exceed what? - 6-7PSI or 6F 
 
What is the primary purpose of using flux when soldering copper or brass parts? - Prevent Oxidation 
 
The water that results from a defrost cycle of an ...
One horsepower is equal to what? - 746 watts. One watt=3.413 BTUs per hour. Power=I times E and BTUs equal P times 3.413 
 
Direct current flows how? - In one direction, only from a negative to a positive potential 
 
60 Hz. means what? - Current, within a circuit, changes direction 120 tim...
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Add to cartOne horsepower is equal to what? - 746 watts. One watt=3.413 BTUs per hour. Power=I times E and BTUs equal P times 3.413 
 
Direct current flows how? - In one direction, only from a negative to a positive potential 
 
60 Hz. means what? - Current, within a circuit, changes direction 120 tim...
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: indic...
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Add to cartWhat 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: indic...
A judgment - An opinion is 
 
Easy to use - Which of the following is a future of a product or service 
 
A truth - A fact is 
 
Saves time - Which of the following is a benefit of a product or service 
 
DOT - Which of the following agencies has jurisdiction over the shipping and lab...
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Add to cartA judgment - An opinion is 
 
Easy to use - Which of the following is a future of a product or service 
 
A truth - A fact is 
 
Saves time - Which of the following is a benefit of a product or service 
 
DOT - Which of the following agencies has jurisdiction over the shipping and lab...
Charging a heat pump with refrigerant is best accomplished in the _______ mode. 
 
 A: Heating mode 
 
 B: Cooling mode 
 
 C: Defrost mode 
 
 D: Emergency heating mode - B: Cooling mode 
 
Heat pumps can provide both heating in the winter and cooling in the summer. In which mode is the heat pum...
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Add to cartCharging a heat pump with refrigerant is best accomplished in the _______ mode. 
 
 A: Heating mode 
 
 B: Cooling mode 
 
 C: Defrost mode 
 
 D: Emergency heating mode - B: Cooling mode 
 
Heat pumps can provide both heating in the winter and cooling in the summer. In which mode is the heat pum...
The primary purpose of using flux when soldering copper or brass parts is to: 
prevent oxidation. 
 
 
Light commercial outdoor condensing units that are installed in geographic areas where snowfalls can be heavy must be mounted: 
with wind barriers on all sides. 
 
 
Proper ductwork connections and...
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Add to cartThe primary purpose of using flux when soldering copper or brass parts is to: 
prevent oxidation. 
 
 
Light commercial outdoor condensing units that are installed in geographic areas where snowfalls can be heavy must be mounted: 
with wind barriers on all sides. 
 
 
Proper ductwork connections and...
A system is supplied from the factory with charge of 5 pounds 10 ounces for a 15 foot line set. The line set is 25 feet long. The manufacturer's instruction sheet specifies 0.6 ounces of refrigeration to be added for each added foot of refrigerant line set length. What is the total refrigerant char...
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Add to cartA system is supplied from the factory with charge of 5 pounds 10 ounces for a 15 foot line set. The line set is 25 feet long. The manufacturer's instruction sheet specifies 0.6 ounces of refrigeration to be added for each added foot of refrigerant line set length. What is the total refrigerant char...
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 use...
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Add to cartWhat 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 use...
What method of heat transfer does not require fluid or solids? - Radiation 
 
Capillary tubing should only be cut to length using a - Triangular or knife edge file 
 
Before beginning any electrical check out procedure what step must always be taken after the equipment disconnect or circuit br...
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Add to cartWhat method of heat transfer does not require fluid or solids? - Radiation 
 
Capillary tubing should only be cut to length using a - Triangular or knife edge file 
 
Before beginning any electrical check out procedure what step must always be taken after the equipment disconnect or circuit br...
Since 1992, the United States Department of Energy has required that all furnaces sold and installed from that date on must have an AFUE of no less than: 
 
 A: 70% 
 
 B: 75% 
 
 C: 78% 
 
 D: 80% - C: 78% 
 
Many pre-1992 furnaces have efficiencies around _______. 
 
 A: 10% 
 
 B: 40% 
 
 C: 6...
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Add to cartSince 1992, the United States Department of Energy has required that all furnaces sold and installed from that date on must have an AFUE of no less than: 
 
 A: 70% 
 
 B: 75% 
 
 C: 78% 
 
 D: 80% - C: 78% 
 
Many pre-1992 furnaces have efficiencies around _______. 
 
 A: 10% 
 
 B: 40% 
 
 C: 6...
What method of heat transfer does not require fluids or solids? - Radiation (heat waves) 
 
Capillary tubing should only be cut to length using a - triangular knife edge file 
 
Before beginning any electrical checkout procedure, what step must always be taken after the equipment disconnect or...
Preview 1 out of 4 pages
Add to cartWhat method of heat transfer does not require fluids or solids? - Radiation (heat waves) 
 
Capillary tubing should only be cut to length using a - triangular knife edge file 
 
Before beginning any electrical checkout procedure, what step must always be taken after the equipment disconnect or...
<question: The density of air is 
 
 A: How much air weighs per cubic foot 
 
 B: How much volume one pound of air occupies 
 
 C: The ratio of the weight of water to that of the same volume of water 
 
 D: The ratio of the amount of water vapor contained in a cu. ft. of air to the amount of m...
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Add to cart<question: The density of air is 
 
 A: How much air weighs per cubic foot 
 
 B: How much volume one pound of air occupies 
 
 C: The ratio of the weight of water to that of the same volume of water 
 
 D: The ratio of the amount of water vapor contained in a cu. ft. of air to the amount of m...
1. In my opinion, the new thermostat design is a change for better. - 1. An improvemnet 
 
2. If you bought four thermostats for $91.12, what was the price of each Tatar? - 2. $22.78 
 
3. The standard atmospheric condition (Sea Level) for water to boil at 212 °F are: - 3. Atmospheric pres...
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Add to cart1. In my opinion, the new thermostat design is a change for better. - 1. An improvemnet 
 
2. If you bought four thermostats for $91.12, what was the price of each Tatar? - 2. $22.78 
 
3. The standard atmospheric condition (Sea Level) for water to boil at 212 °F are: - 3. Atmospheric pres...
Generally, vibration eliminators in piping should be installed: 
 
 A: At a 45 degree angle 
 
 B: At a 90 degree angle 
 
 C: Perpendicular to the compressor crankshaft 
 
 D: Parallel to the compressor crankshaft - D: Parallel to the compressor crankshaft 
 
If you purchased ten filter-driers ...
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Add to cartGenerally, vibration eliminators in piping should be installed: 
 
 A: At a 45 degree angle 
 
 B: At a 90 degree angle 
 
 C: Perpendicular to the compressor crankshaft 
 
 D: Parallel to the compressor crankshaft - D: Parallel to the compressor crankshaft 
 
If you purchased ten filter-driers ...
formula to convert celsius to fahrenheit - F = (1.8 x C) + 32 
 
formula to convert fahrenheit to celsius - C = .56 (F - 32) 
 
specific heat - the amount of heat required to raise 1 lb of a substance 1 degree fahrenheit 
 
sensible heat - Is the heat that came be measured or sensed by a...
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Add to cartformula to convert celsius to fahrenheit - F = (1.8 x C) + 32 
 
formula to convert fahrenheit to celsius - C = .56 (F - 32) 
 
specific heat - the amount of heat required to raise 1 lb of a substance 1 degree fahrenheit 
 
sensible heat - Is the heat that came be measured or sensed by a...
a (Centrifugal) - Which of the following compressors are considered a dynamic compressor? 
 
a. Centrifugal 
b. Reciprocating 
d. Rotary 
c. Scroll 
 
b (Superheated vapor / sub cooled liquid) - What is the condition of the refrigerant as it enters and leaves the condensing coil of a typical l...
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Add to carta (Centrifugal) - Which of the following compressors are considered a dynamic compressor? 
 
a. Centrifugal 
b. Reciprocating 
d. Rotary 
c. Scroll 
 
b (Superheated vapor / sub cooled liquid) - What is the condition of the refrigerant as it enters and leaves the condensing coil of a typical l...
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 t...
Preview 3 out of 25 pages
Add to cartd (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 t...
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