Hvac final exam 2024 - Study guides, Class notes & Summaries

AHIT Heating Systems Exam with Verified Solutions 2024 Heating System - Answer -The system should be capable of maintaining 68° F. in every habitable space. Remember that spaces such as bathrooms, laundry rooms, and closets are not habitable spaces, so a heat supply source is not required in these spaces. Annual Fuel Utilization Efficiency (AFUE) - Answer -a ratio of heat generated by a heating system versus the energy used; the minimum AFUE for most gas furnaces is around 80, meaning that...

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 with a gas boiler d. When using a two transformer system - ANSWER A) When Using a single transformer system Digital thermostats usually display temperature, time of day, programming and operating status. Select one: True False - ANSWER True With the fan switch in the on posit...

HVAC Controls Unit 14 Final Exam 2024. If a mercury bulb thermostat is not mounted perfectly level, there will be a large difference between the actual room temperature and the thermostat's set point. - CORRECT ANSWER The correct answer is 'True'. Line voltage thermostats have heavier contacts and use which type of sensing element? - CORRECT ANSWER The correct answer is: all of the above a. bimetal b. bellows c. remote bulb The best type of switch to detect air movement is...

HVAC Unit 8 Final Exam Prediction Questions 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 ...

Michigan Builders License Exam Study Guide 2024 Questions and Answer 100% Pass What is the first offense penalty for engaging in the practice of residential building without a license? -Answer-Not less than $5,000 and not more than $25,000 and/or one year in prison. Subsequent violations can extend the prison time to up to 2 years. What is the penalty for engaging in the practice of residential builders license, resulting in a death? -Answer-Not less than $5,000 and not more than $25,000 a...

HVAC Final Exam Review Test 2024. airflow - CORRECT ANSWER the distribution or movement of air. air handler - CORRECT ANSWER indoor part of an air conditioner that moves cooled or heated air throughout the ductwork of your home. Usually a furnace or blower coil. BTU - CORRECT ANSWER British thermal unit. Unit of heat energy. central air conditioning system - CORRECT ANSWER system in which air is treated at a central location and distributed to and from rooms by one or more fans and a s...

HVAC Final Exam, Unit 10 Practice Questions 2024. If 30 oz. of refrigerant are to be added to a refrigeration system and the supply cylinder weighs 26 lb. 4 oz. before any is added, what will the supply cylinder weigh after the system has been charged? - CORRECT ANSWER 24 lb. 6 oz. Fractionation occurs when? - CORRECT ANSWER Some of a blended refrigerant evaporates and condenses before the rest of the blend A graduated cylinder charging device is a device that? - CORRECT ANSWER All of...

HVAC Final Exam, Unit 10 Correctly Answered 2024. If 30 oz. of refrigerant are to be added to a refrigeration system and the supply cylinder weighs 26 lb. 4 oz. before any is added, what will the supply cylinder weigh after the system has been charged? - CORRECT ANSWER 24 lb. 6 oz. Fractionation occurs when? - CORRECT ANSWER Some of a blended refrigerant evaporates and condenses before the rest of the blend A graduated cylinder charging device is a device that? - CORRECT ANSWER All of...

HVAC Controls Final Exam Questions 2024. The thermostat terminal that connects to the reversing valve control in a heat pump is - CORRECT ANSWER O (orange), heat pump (red) power (Green) Fan Control (yellow) Cooling contorl y1-y2 stage (white) heating contorl Increase Furnace effectively, the start of the furance blower is delayed using - CORRECT ANSWER Time delay relay A conventional thermostat should not be thrown into the regular trash because it - CORRECT ANSWER may contain mercur...

CET review for final exam questions & answers 2023/2024 Josh works in a computer repair store. Josh knows that asking open-ended questions is very important in determining the problem. Which choice below explains the importance? - ANSWER-The customer can explain details such as what is happening and when the problem began. Andreius has had a lot of jobs come into his shop lately. He has had to put off fixing Mrs. Staley's computer because he is waiting on parts to fix it. What should he...