Hvac unit 20 - Study guides, Class notes & Summaries

Hvac Unit 13 Practice Test 2024. What are the types of Automatic Controls? - CORRECT ANSWER Electrical, Mechanical, Electromechanical and Electronic. Describe the Electrical Automatic Controls - CORRECT ANSWER Operated and normally control electrical devices. Describe the Mechanical Automatic Controls - CORRECT ANSWER Typically operated by pressure or temp and often control fluid flow. Describe the Electromechanical Automatic Controls? - CORRECT ANSWER Driven by pressure or tempera...

HVAC Unit 20 FINAL Exam Study Guide 2024. What is the best method to repair a fractional horsepower motor that has a bad bearing? - CORRECT ANSWER Replace the entire motor. A technician needs to check a single-phase compressor. He labels the three terminals "A," "B," and "C" and takes resistance readings of the windings. He reads 10 ohms from "A" to "B," infinity from "B" to "C," and infinity from "C" to "A." Identify the terminals. - CORRECT ANSWER Can not identify ter...

Created to serve as a complete, comprehensive code regulating the construction of single-family, two-family and buildings consisting of three or more townhouse units. - Answer IRC (International Residential Code) Administrative - Answer First 2 chapters of code book are True - Answer Plans or supporting documents are almost always required by the controlling authority prior to issuing a permit. T or F Yes - Answer Does the building official have the authority to render interpretations o...

NFPA 1001 is the: A. Standard for Fire Fighter Professional Qualifications. B. Standard for Industrial Fire Brigades. C. Standard for Fire Department Occupational Safety and Health Programs. D. Standard for Blood Borne Pathogen Training. - Correct answer-A One of the primary functions of the truck/ladder company is: A. performing forcible entry to the fire building. B. directing traffic at the scene. C. laying supply lines for engine companies. D. fire attack. - Correct answer-A OSHA m...

Solutions and Laboratory Manual for Electricity for HVACR 1st Edition by Joseph Moravek. Unit 1: Read This Unit First: What I Need to Know to Understand Electricity Unit 2: Ohms Law Unit 3: Safe Use of Electrical Instruments Unit 4: Electrical Fasteners Unit 5: Power Distribution Unit 6: National Electric Code Unit 7: Electrical Installation of HVAC Unit 8: Transformers Unit 9: Relays, Contactors and Motor Starters Unit 10: Capacitors Unit 11: Thermostats Unit 12: Pressure Switches Unit 13: Misc...

HVAC Unit 20 Final Exam Study Questions 2024. What is the best method to repair a fractional horsepower motor that has a bad bearing? - CORRECT ANSWER Replace the entire motor. A technician needs to check a single-phase compressor. He labels the three terminals "A," "B," and "C" and takes resistance readings of the windings. He reads 10 ohms from "A" to "B," infinity from "B" to "C," and infinity from "C" to "A." Identify the terminals. - CORRECT ANSWER Can not identify ter...

LTE HVAC unit 52 Take Home Quiz Test ...

Hvac Unit 41 Study Guide Test 2024. Before installing a gauge on the high-pressure side of a system, you should do which of the following? - CORRECT ANSWER A. Turn on the system. B. Turn off the system. C. Adjust the system to a neutral position. D. Have a cylinder approved by the DOT nearby. ANS: B. Capacitors should be shorted with a _____ before checking with an ohmmeter. - CORRECT ANSWER 20,000 ohm Resistor The high- and low-side pressures on an operating air-conditioning system c...

What is the best method to repair a fractional horsepower motor that has a bad bearing? - ️️Replace the entire motor. A technician needs to check a single-phase compressor. He labels the three terminals "A," "B," and "C" and takes resistance readings of the windings. He reads 10 ohms from "A" to "B," infinity from "B" to "C," and infinity from "C" to "A." Identify the terminals. - ️️Can not identify terminals: open winding Technician "A" says that a shorted wind...

HVAC Unit 8 Complete Verified Test 2024. Refrigeration systems are designed for what two substances to circulate in them? - CORRECT ANSWER Refrigeration and oil To pull a vacuum means to ....? - CORRECT ANSWER Lower the pressure in a refrigeration system. Are noncondensible gases desirable in a refrigeration system? - CORRECT ANSWER No A mercury U-tube manometer - CORRECT ANSWER Is used to measure atmospheric pressure. A micron gauge... - CORRECT ANSWER Is often used to measure a v...