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HVAC Gas Heat certification exam Questions & 100% Verified Answers Pack | Latest Update $23.99   Add to cart

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HVAC Gas Heat certification exam Questions & 100% Verified Answers Pack | Latest Update

HVAC Gas Heat certification exam Questions & 100% Verified Answers Pack | Latest Update

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AC Review HVAC Questions & 100% Verified Answers | Latest Update | Already Graded A+

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Heat which causes a change in temperature of a substance is called; : Sensible Heat. heat added to substance without a rise in temperature; (example: liquid refrigerant to gas) this process is called? : Latent heat of vaporization. Heat added to the refrigerant in a vapor state after the evapo...

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C20 (HVAC) Hvac systems Questions & 100% Verified Answers | Latest Update | Already Graded A+

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Upflow Furnace: : Is used to describe furnaces that stand upright and blow air upward. These systems are designed for first floor installation with attic ductwork or basement installation with ductwork positioned below the first floor. Low boy furnace: : Similar to Upflow except the furnace i...

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Electric Heat ESCO - HVAC Excellence Exam Questions & 100% Verified Answers | Latest Update | Already Graded A+

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Before working on an electric furnace the tech should : Review diagram, remove jewelry, and follow safety procedures. ALL OF THE ABOVE. A GFCI circuit breaker : detects current leaks to groound the conductor in an electric heat element is usually made of : Nichrome An example of resistive lo...

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HVAC Contractor prep Test 2 Questions & 100% Verified Answers | Latest Update | Already Graded A+

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The International Mechanical Code considers a "flammable Vapor" to be concentration of flammable constituents in the air which exceeds _____________ percent of its flammability limit. : 25% During installation or service of electrical controls, a digital multimeter set to voltage must be c...

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HVACR gas heating esco Questions & 100% Verified Answers | Latest Update | Already Graded A+

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using an ohmmeter, there is 120 VAC between high speed and ground wires, this indicates : open if temperature rise is too high... : increase fan speed how many of the 3 OSHA conditions defining confined spaces must be met : all 3 what causes the temperature limit safety switch to shut off th...

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HVAC Air Condition Esco Questions & 100% Verified Answers | Latest Update | Already Graded A+

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Heat which causes a change in temperature of a substance is called : Sensible Heat Heat added to a substance without a rise in temperature is called : Latent Heat Heat added to refrigerant in a vapor state after the evaporation process is called : Superheat A scroll compressor moved refrigeran...

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HVAC practice test online Questions & 100% Verified Answers | Latest Update | Already Graded A+

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Can cause a packaged HVAC unit to run high head pressure? : The condenser coil is dirty. Condenser coil fins are often damaged by: : Hail storms. Frequent pressure washing. Salt spray. Insufficient rinsing after cleaning coils with strong acids and bases. Water cooled air conditioning systems...

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HVAC Electrical Test Questions & 100% Verified Answers | Latest Update | Already Graded A+

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Current flow is : the flow of electrons in the circuit impedance is : opposition to alternating current flow like charges : repel each other Any material that will readily release electrons is called : a conductor the symbol for current is : I Which of the following materials would best be...

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HVAC Certification Practice Tests Questions & 100% Verified Answers | Latest Update | Already Graded A+

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Propane and Butane are _______ than air: : Heavier What will be the resistance in the circuit if the supply voltage is 30V and current flowing through the circuit is 5A : 6 ohms Temperature at which oil starts to produce a waxy substance that may interfere with the refrigeration system : Fl...

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HVAC CONTRACTOR EXAM Questions & 100% Verified Answers | Latest Update | Already Graded A+

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An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter : voltmeter This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and control superheat A. a...

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HVAC 101-Heating Fundamentals and Answers for Final Exam Questions & 100% Verified Answers | Latest Update | Already Graded A+

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What is an SSU and what does it do? : It is a unit located on the side of the first which receives power (120 volts) before anything located within the furnace itself. It primarily consists of a switch and a fuse, and it is what allows for power to flow to the door switch. Opening the switch on...

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HVAC Gas Heat certification exam Questions & 100% Verified Answers | Latest Update | Already Graded A+

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A gas furnace is to be installed in a garage. The national standards require that the burners and ignition sources must be located ______ above the floor : 18 inches A good description of how a bi-metal fan switch operates the blower motor on a gas furnace is : Temperature on- temperature off...

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Mechanical Hvac practice test Questions & 100% Verified Answers | Latest Update | Already Graded A+

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A separate and distinct ventilation or exhaust system shall be provided for _____? (A)noxious gases (B) corrosive fumes (C)flammable vapors (D) incompatible materials. : D. 505.1.2 In systems conveying flammable vapors, gases, or mists, the concentration shall not exceed 25 percent of the lower...

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