Thermostatic Study guides, Class notes & Summaries

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 Which of the following is the correct sequence of work? A: Attach gauge manifold, recover refrigerant, replace filter core, evacuate the system, recharge the system. B: Recover refrigerant, evacuate the sy...

What electro-mechanical control would you use on a cap tube or automatic expansion valve system to maintain the space temperature? A: A dual pressure control B: A low pressure control C: A thermostatic control D: A high pressure control - Answer-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: indicates the temp. rise over the surrounding air of a motor when the motor is operating at ful...

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 outlet of the evaporator to sense temperature and control superheat A. automatic expansion valve B. thermostatic expansion valve C. low side float D. schraeder valve - Correct Answer ️️ -the...

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 Which of the following is the correct sequence of work? A: Attach gauge manifold, recover refrigerant, replace filter core, evacuate the system, recharge the system. B: Recover refrigerant, evacuate the system, repl...

An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter - Answer voltmeter This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and control superheat A. automatic expansion valve B. thermostatic expansion valve C. low side float D. schraeder valve - Answer thermostatic expansion valve when installing a reversing valve on a heat pump, how many br...

CRCST STUDY GUIDE EXAM QUESTIONS AND ANSWERS-LATEST The medical abbreviation ESS relates to... Surgical removal of the uterus The use of endoscopic instrumentation to operate on the nose The treatment of fractured bone without with surgical incision Hip joint reconstruction - Answer-The use of endoscopic instrumentation to operate on the nose The portion of the steam sterilizer that measures steam temp and automatically controls the flow of air and condensate from the sterilizer cham...

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 charge for the system? A. 6 ounces B. 5 pounds C. 5 pounds 10 ounces D. 6 pounds - D. 6 pounds 15ft - 25ft = 10ft x .6 = 6 ounces 5 pounds + 10 ounces + 6 ounces 5 pounds + 16 ounces = 6 pound...

ESCO Air Conditioning Exam Questions with Answers Latest Update (100% Verified) Heat added to a substance without a rise in temperature correct answers Latent heat Heat added to the refrigerant in a vapor state after the evaporation process is called correct answers Superheat Scroll compressor move refrigerant by correct answers Involute Spirals The movement of heat by way of fluid is called correct answers Convection The movement of heat by direct contact is correct answers Conduction Th...

ESCO Air Conditioning Exam Questions with Answers Latest Update 2024/2025 (100% Solved) Scroll compressor move refrigerant by correct answers Involute Spirals The movement of heat by way of fluid is called correct answers Convection The movement of heat by direct contact is correct answers Conduction The standard unit for measuring the quantity of heat in a substance is correct answers BTUs Refrigerant gives up heat when correct answers It condenses Why must refrigerant in the suction line ...

HVAC Metering Devices Exam Questions with Answers The piping between the condenser and the metering device is called? A Suction line B Discharge line C Expansion line D Liquid line - Answer-D Liquid line Which component is NOT a type of metering device? A Capillary tube B Bare tube C Automatic expansion valve D Thermostatic expansion valve - Answer-B Bare tube The diagram of an automatic expansion valve separates the atmospheric pressure and the system pressure. A True B Fals...