Hvac unit 20 Study guides, Class notes & Summaries

Unit 20 Troubleshooting Electric Motors / HVAC Unit 20 Review Questions and Review Test

0-20 DB Sound Level - Loudness: Very Faint Source: Whisper (5) 100-200 DB Sound Level - Loudness: Deafening Source: Generator (5) 20-40 DB Sound Level - Loudness: Faint Source: Quiet Conversation (5) 4 Primary Project Delivery Methods - - Design Bid Build - Design Build - CMAR - Multiple Prime Contracts (2) 4 Types of Shifting - Settlement, Upheaval, Sliding, Liquefaction. (4) 40-60 DB Sound Level - Loudness: Moderate Source: Average Conversation (5) 60-80 DB Sound Level - Loudness:...

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 winding wi...

HVAC Unit 1, 2 & 3

The inspector is not required to determine ____ ___ of any system or component. - Answer- -Years of age -Life expectancy -Make model Horizontal waste pipe should slope ____ inch per foot - Answer- 1/4" per foot if < 3 inch pipe. 1/8" per foot if > or = to 3 inch pipe Drip screed - Answer- Also called weep screed. Used at the base/bottom of stucco walls to release moisture. Pressure Vacuum Breaker (PVB) - Answer- Used for Backflow Prevention. Lawn Irrigation systems: install...

HVAC UNIT 23 COMPRESSORS correctly answered 2023Describe the operation of a compressor - correct answer Vapor pump- It increases suction pressure level to the discharge pressure level. Takes a low pressure low temp vapor compresses it into a high pressure, high temp vapor Name 5 types of compressors - correct answer Reciprocating, screw, rotary, scroll, centrifugal True or false: A compressor can compress a liquid - correct answer False What would be considered a higher-than-normal temp...

Professional Home Inspector Exam NHIE / TREC Questions and Answers Already Passed Document Content and Description Below Professional Home Inspector Exam NHIE / TREC Questions and Answers Already Passed The inspector is not required to determine ____ ___ of any system or component. -Years of age -Life expecta ncy -Make model Horizontal waste pipe should slope ____ inch per foot 1/4" per foot if < 3 inch pipe. 1/8" per foot if > or = to 3 inch pipe Drip screed Also called weep screed. U...

HVAC Unit 2 questions correctly answered 2023 Matter - correct answer Substance that occupies space and has mass Atoms - correct answer Smallest particle of an element Compound - correct answer When atoms of one substance combine with another to create a new substance Matter (3 States) - correct answer Solid, Liquid, Gas Mass - correct answer Matter held together to the extent that is is considered one body Weight - correct answer Force that matter applies to a supporting surface...

Hvac Journeyman Exam 2024 Questions and Correct Answers. 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. - ANSWER-B. Fitting shall be replaced or repaired and retested. UMC Section 1316.4.3 Every absorption refrigerating system supported from the ground shall rest on a concrete slab extending not less than _____ the adjoining ground leve...

Vivint practice quiz questions and answers 100% correct True or False: The FireFighter may be installed next to a stand-alone battery-powered smoke detector. False True or False: When performing a full system test, you may bypass any open doors or windows. False When programming an SKEY1, you must Always...? Enable emergency key True or False: When running power to the TAKE-345, polarity does not apply. False When programming the emergency key for an SKEY1, which zone/sensor types are recom...