Hvac unit 20 - Study guides, Class notes & Summaries

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 Journeyman Exam Questions and Answers Updated 2024/2025 (100% Verified) Every absorption refrigerating system supported from the ground shall rest on a concrete slab extending not less than _____ the adjoining ground level.(A) 3 inches below(B) 3 inches above (C) 6 inches below(D) 6 inches above. - ANSWER-B. Slab extending not less than 3" above the adjoining ground level. UMC Section 1106.2 Any part of a venting system installed at an angle greater than 45 degrees from the vertical i...

Hvac Journeyman Exam Questions and Answers Updated 2024/2025 | 100% Verified. 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 a...

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...

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 gases, and ionization. ((Ref: 1/1)) Describe in simple terms the basic process by which a refrigerant transfers heat energy. - Correct Answer ️️ -A refrigerant is used to transfer heat when it c...

Having a regular HVAC filter replacement plan can help: A. Protect the system components B. Double the system's airflow C. Humidify the airflow D. Sanitize the system components - ANSWER-A. Protect the system components According to ACR, the NADCA Standard, properly performed HVAC system cleaning services should: A. Eliminate all contamination B. Restore the internal insulation to an "as new" condition C. Restore the evaporator coil to its original pressure drop D. Render the syste...

Hvac Journeyman Exam 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. - 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 level.(A) 3 inches below(B) 3 inches above ...

HVAC EXCELLENCE EXAM QUESTIONS AND ANSWERS 100% PASS Heat which causes a change in temperature of a substance is called - Correct Answer ️️ -sensible heat, Heat added to a substance without a rise in temperature; (example: liquid refrigerant to gas) this process la called? - Correct Answer ️️ -latent heat Heat added to the refrigerant in vapor state after the evaporation process is called, - Correct Answer ️️ -superheat A scroll compressor moves refrigerant by means of; - Cor...

Asbestos Maryland Practice Exam 2 2024/2025 ACM stands for - CORRECT CORRECT-Asbestos Containing Material The operating agency for each public school building in which fraible asbestos containing materials have been identified shall monitor airborne asbestos levels in each sampling area. For at least how many hours during a period of normal activity must this monitoring be done? - CORRECT CORRECT-it must be done for 8 hours What portion of insurance coverage for medical exams and monit...

Asbestos Practice Exam 2 Questions and Answers Already Passed ACM stands for Asbestos Containing Material The operating agency for each public school building in which fraible asbestos containing materials have been identified shall monitor airborne asbestos levels in each sampling area. For at least how many hours during a period of normal activity must this monitoring be done? it must be done for 8 hours What portion of insurance coverage for medical exams and monitoring as required by law m...