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Basic HVACR 100 Final Exam Complete Solutions True or False: Refrigeration systems are designed to operate with only refrigerant and oil in the system ️True Air contains three non-condensibles that are detrimental to the system ️Air, nitrogen, moisture A compound guage is used to measure vacuum level ️Low side/ blue gauge Molecular motion stops at what degree Fahrenheit? ️-460 degrees The law of conservation states that energy can neither be_____ or ______. ️created or dest...

HVAC FINAL GRADED A Which of the following would have the greatest effect on the heat content of the refrigerant? A) The refrigerant's humidity B) The refrigerant's state C) The refrigerant's temperature D) The refrigerant's pressure ️Correct Answer B) The refrigerant's state A mechanical refrigeration system cools a room by: ️Removing heat from the room. The four types of cooling mechanisms are: ️Evaporative, Thermoelectric, Absorption, Mechanical Compression...

HVAC final exam, unit 16 all answers correct A ___ reacts to stop, start, or modulate the flow of water, air, or refrigerant to the system or conditioned space ️Controlled device All control systems can be subdivided into ____, no matter how many controls there are. ️Control loops _______ control systems were used before electronics. ️Pneumatic Pneumatic controls must have a permanent air supply that is ______ ️clean and dry Most system compressors provide ______ psig of ai...

HVAC final exam unit 14 verified answers When a water regulating valve is used to control the head pressure of a water-cooled system, the valve's spring is acting against which pressure to modulate the water flow? ️Head pressure of the system To prove that the combustion blower motor is operating before ignition, a ______ would be used. ️Sail switch The difference between system overshoot and system lag is called? ️Temperature swing The purpose of a heat anticipator is to_____...

HVAC final exam unit 11 complete solutions To check the temperature leads of an electronic thermometer for low temperature, they should be stirred in a container of Crushed ice and pure water Ohm's law is represented with the formula I=E/R A device commonly used for detecting refrigerant leaks is a(n) Halide torch Three reference points for checking temperature measuring instruments are 32, 98, 212 degrees If the ammeter is off by more than _____% it should be sent to the repair sho...

HVAC Electrical Test Verified Solutions Current flow is the flow of electrons in the circuit impedance is opposition to alternating current flow like charges repel each other Any material that will readily release electrons is called a conductor the symbol for current is I Which of the following materials would best be suited for use as a semi-conductor silicone the safety ground conductor is usually color coded black (or bare or green & yellow stripe) An electron has a negative ...

HVAC final exam, unit 15 already graded A+ A control can be which of the following? ️All of the above An example of a power consuming device would be a(n) ____ while an example of a non-power consuming device would be a(n) _____. ️Light bulb, single-pole single-throw switch An electrical power consuming component. ️is also known as a load The line side of a switch is the. ️side the power source is connected to If an air conditioning system is calling for cooling and the compr...

HVAC Final Exam All Answers Verified What is an HVAC System? all the items needed to maintain thermal comfort within a space or group of spaces What are the four components of an HVAC system? Fans Pumps Compressor Evaporator What is a PTAC? Packaged Terminal Air Conditioner What is a PTHP? Packaged Terminal Heat Pump List the heat transfer equipment (3) Boiler Chiller Coil What is a zone? A zone is a separately controlled space or group spaces What is VAV and describe i...

HVAC Final Exam Electrical For Air Conditioning All Answers Correct 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 ️A) When Using a single transformer system Digital thermostats usually display temperature, time of day, programming and operating status. Select...

Final Exam Bodybuilding Verified Solutions This type of muscle blends into tendinous insertions that attach to bones, pulling them, which produces the desired movement. a. skeletal muscle b. swoll muscle c. cardiac muscle d. smooth muscle ️a. skeletal muscle Muscle are connected to bones by what? a. ligaments b. tendons c. science is still investigating d. motor units ️b. tendons What type of muscle fibers are referred to as coach potato fibers? a. IIy b. IIa ...

NASM BODYBUILDING EXAM COMPLETE SLUTIONS What are the three mechanisms involved in exercise-induced muscle hypertrophy? Select one: ️a. Mechanical tension, muscle damage and metabolic stress Bodybuilders tend to demonstrate weakness of which muscle group? Select one: ️c. Rotator cuff A bodybuilder has tight (overactive) chest, hip flexors and calves and weak (underactive) rotator cuff, rhomboids and gluteals. Which statement is correct? Select one: ️b. The bodybuilder should ...

NASM Physique and Bodybuilding Coach Already Graded A+ Evidence-based practice ️An approach to practice where decisions are based on (a) the best available research, (b) the unique context, preferences, and values of the client, and (c) the experiences of the practitioner. Physical culture ️A 19th century cultural movement in Europe and the United States that preceded organized strength and physique sport which promoted health via regular training, typically including weight lift...

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