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HVAC: EPA 608 Certification Study Guide with 100% Complete Solutions Are there drop-in replacements for R-12 systems? Why or why not? - Correct Answer ️️ -No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a a...

HVAC CONTRACTOR EXAM QUESTIONS AND ANSWERS 100% PASS An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter - Correct Answer ️️ -voltmeter This device uses a thermal sensing bulb at the...

HVAC Contractor Test 1 100% Correct Solved An air conditioning and refrigeration contracting company must notify the department of all licensees who have assigned their licenses to the company and must notify the department within how many calendar days when any license whose license is assigned...

Hvac Employment readiness Exam Questions and Answers 100% Pass Sensible Heat - Correct Answer ️️ -Causes a change of temperature in a substance. Latent heat - Correct Answer ️️ -Heat added to a substance without a rise in temperature. Superheat - Correct Answer ️️ -Heat added to the...

HVAC Final Exam Electrical For Air Conditioning Questions and Answers 100% Pass When using a low voltage T-stat for heating and cooling, when would there be a jumper between Rh and Rc? Select one: a. When using a single transformer system b. When heating with an oil boiler c. When heating wit...

Hvac Journeyman Exam Questions and Answers 100% Pass Defects on gas piping or fittings shall be _____.(A) repaired(B) replaced or repaired and retested(C) repaired by a certified welder(D) ignored, as the operating pressure is much less than the air test. - Correct Answer ️️ -B. Fitting shal...

HVAC Certification Practice Tests 100% Correct Solved Propane and Butane are _______ than air: - Correct Answer ️️ -Heavier What will be the resistance in the circuit if the supply voltage is 30V and current flowing through the circuit is 5A - Correct Answer ️️ -6 ohms Temperature at whi...

HVAC S.T.A.R EXAM QUESTIONS AND ANSWERS 100% PASS The evaporator in a refrigeration system: - Correct Answer ️️ -Is the component where refrigerant boils and absorbs heat. The purpose of the compressor is to change ___________. - Correct Answer ️️ -Low- pressure, low-temperature vapor t...

MCC HVAC MIDTERM EXAM QUESTIONS AND ANSWERS 100% PASS List at least five factors that must be controlled if a comfortable indoor environment is to be maintained. - Correct Answer ️️ -The factors that must be controlled include temperature, humidity, air motion, dust, bacteria, odors, toxic g...

HVAC Study Guide with 100% Complete Solutions Why is IAQ important? a) to provide a comfortable environment for occupants b) to provide enough oxygen for occupants c) to provide the right temperature for a productive environment for occupants d) to provide sufficient airflow for occupants e) t...

HVAC Excellence - ELECTRICITY Exam Questions and Answers 100% Pass Current flow is: - Correct Answer ️️ -The flow of electrons in the circuit. Impedance is: - Correct Answer ️️ -Opposition to alternating current flow. Like charges; - Correct Answer ️️ -repel each other. Any material...

ASE HVAC exam practice questions and answers 100% pass What would be the most likely result of a missing AC compressor clutch diode? - Correct Answer ️️ -Damage to the ECM Tech A says that the service fittings for R-134a are the same as the service fittings for R-12. Tech B says the low-sid...

HVAC Refrigeration Final Practice Exam Questions and Answers 100% Pass Temperature - Correct Answer ️️ -Levels of heat, the speed of molecules are traveling British thermal unit - Correct Answer ️️ -Amount of heat To raise the temperature of 1 lbs of water 1 degree F Heat flow - Correct...

HVAC Gas Heat certification exam Questions and Answers 100% Pass 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 - Correct Answer ️️ -18 inches A good description of how a bi-metal fan ...