Engineering Management
Engineering Management
Here are the best resources to pass Engineering Management. Find Engineering Management study guides, notes, assignments, and much more.
Exam (elaborations)
HEAT PUMP ESCO QUESTIONS WITH ACCURATE ANSWERS
A customer complains that their heat pump systems blows cool air periodically during the heat mode. This could be caused by; correct answer A faulty defrost relay (does not energized the aux. heat during the defrost mode.) A heat pump can be difficult to charge properly because; correct answer Heat pumps can only be charged in the cooling mode. A heat pump has a thermostatic expansion valve (TEV) and a check valve at each coil. When the modes are reversed; correct answer Refrigerant will b...
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A2L STUDY GUIDE QUESTIONS WITH ACCURATE ANSWERS
____ ______ climate necessitates slightly lower airflow 325-350 cfms per ton of cooling correct answer High humidity climates A _____ refrigerant blend is a mixture of two or more refrigerant that can separate or fractionate into its original components correct answer Zeotropic a globally recognized, independent safety certification organization. Approves additional refrigeration system components. correct answer Underwriters laboratories UL A proper ______/_____ procedure should be use...
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Exam (elaborations)
ESCO AIR CONDITIONING EXAM QUESTIONS WITH ACCURATE ANSWERS
_________ can be use for a leak detection with all high-pressure refrigerant correct answer Soap bubbles 0 pounds per square inch absolute is correct answer A pressure which cannot be further reduced 0 pounds per square inch gauge is correct answer The same as atmospheric pressure 10 pounds of refrigerant passing through a water cooled condenser will lose 20 BTUs of heat per pound. If 10 pounds of water passes through the condenser with an entering temperature of 80°F the temperature o...
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Exam (elaborations)
QUIZ FROM A2L EXAM QUESTIONS WITH ACCURATE ANSWERS
____ is a near-azeotropic, refrigerant blend that has a GWP of 466. It is an HFC/HFO blend madeup HFC-32 and HFO-1234yf. It is charged as a liquid to avoid fractionation and has a very lowtemperature glide (about 2.5°F). correct answer R-454B _____ is a single-compound, HFC refrigerant that has a GWP of 675. It can be charged as a liquid or avapor and does not fractionate or have a temperature glide. correct answer R-32 _____ is an HFO refrigerant with a GWP of less than 1. It is primaril...
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Exam (elaborations)
Systems Engineering Management questions with correct answers.
Systems Engineering Management questions with correct answers.
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Exam (elaborations)
GWPRPQ QUESTIONS WITH ACCURATE ANSWERS
After installation, the refrigerant piping for an A2L system must be: correct answer pressurized with dry nitrogen to perform a leak test. After reaching the required recovery level on a system that is charged with an A2L refrigerant: correct answer a nitrogen sweep should be done to remove any residual refrigerant vapor. An uppercase letter designation (R-407A, R-407B, R-407C) is used when refrigerant blends are: correct answer Composed of the same refrigerants, but with different percent...
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Exam (elaborations)
Intro to Engineering Management questions with right answers.
Intro to Engineering Management questions with right answers.
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Exam (elaborations)
LOW GWP QUESTIONS WITH ACCURATE ANSWERS
2 - Refrigerant cylinders should be transported in the upright position to ensure; correct answer C - Pressure relief valve 3 - Tools used during the installation or service of systems charged with a flammable refrigerant must be; correct answer D - rated for use with flammable refrigerants 4 - The first stage of the evacuation process which removes non-condensables from a system is called; correct answer A - Degassing 5 - Once a flammable refrigerant has been recovered and stored in a ...
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Exam (elaborations)
HVAC-R TEST: BASIC SCIENCE & A2L'S (TEST EDIT 1.22.23) QUESTIONS WITH ACCURATE ANSWERS
______________________ is used to classify a refrigerant according to the potential hazards involved with its use, specifically toxicity and flammability correct answer ASHRAE Standard 34 2L refrigerants have a burning velocity of ____________________________ or less, making them less likely to sustain combustion after the initial ignition source has been removed. correct answer 10 cm/s (3.9 inches per second) A complex process that cleans, filters, and tests a refrigerant to meet the "...
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Exam (elaborations)
Engineering Management Prelims questions with correct answers.
Engineering Management Prelims questions with correct answers.
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Exam (elaborations)
ESCO LOW GWP A2L PRACTICE 1 QUESTIONS WITH ACCURATE ANSWERS
____ __ __________ is a measurement of the amount of heat released when a substance, in this case, a refrigerant, burns. correct answer Heat of combustion (HOC) ______ ___________ _______ can activate mechanical ventilation systems, activate a solenoid to force the systems into a pump down, de-energize the system completely, or a combustion of mitigation responses using control logic electronics. correct answer Active refrigerant sensors _______ ________ can form when any fluoride-containi...
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Exam (elaborations)
RTUS A2L CORE 2 QUESTIONS WITH ACCURATE ANSWERS
____ contain hydrogen, fluorine, and carbon and do not deplete the ozone as they have no chlorine, and most have a high GWP correct answer HFCs ____ refrigerants contain hydrogen and carbon and are classified by ASHRAE in the A3 safety group, which are highly flammable, and are often referred to as natural refrigerants correct answer HCs ____ refrigerants have a very low, single digit, GWP and most are mildly flammable (A2L) correct answer HFOs A ____ should always be used to measure th...
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Exam (elaborations)
A2L PRACTICE EXAM 4 QUESTIONS WITH ACCURATE ANSWERS
A complex process that cleans, filters, and tests a refrigerant to meet the "like new" purity level specified in AHRI standard 700 is______________ correct answer Reclamation A metric that is used to measure a refrigerant environmental impact as a greenhouse gas is_________________ correct answer Global warming potential(GWP) A refrigerant blend behaves like a single component refrigerant is called a_________________ correct answer azeotropic blend A2L refrigerant have a flammabil...
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Exam (elaborations)
LGWP A2L QUESTIONS WITH ACCURATE ANSWERS
__________ is a near-azeotropic, refrigerant blend that has a GWP of 466. It is an HFC/HFO blend made up HFC-32 and HFO-1234yf. It is charged as a liquid to avoid fractionation and has a very low temperature glide (about 2.5°F). correct answer R-454B ___________ is an HFO refrigerant with a GWP of less than 1. It is primarily used in automotive air conditioning systems but is also used as a component in many other HFC/HFO blends. correct answer R-1234yf ________________________ can form w...
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Exam (elaborations)
HVAC EXAM PDF 2 QUESTIONS WITH ACCURATE ANSWERS
After the phase-out of a refrigerant, where will supplies of that refrigerant for equipment servicing come from? correct answer Recovered and Reclaimed gas An example of a CFC refrigerant is: correct answer R-12 As of 2017, how much can a technician be fined for violating the Clean Air Act, including knowingly releasing non-exempt refrigerant from appliances? correct answer $44,539 per day per violation Distributors must verify which of the following before they can sell HCFC or HFC ref...
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Exam (elaborations)
CME 405 Quiz 1 – Lecture 1–9 Q&A Guide on Process Control, Valves, and Automation Systems
This document contains a comprehensive collection of questions with verified answers from Quiz 1 of CME 405, covering Lectures 1 through 9. Key concepts include process control systems, automation types, control loops, valve types and characteristics, feedback and feedforward control, ISA instrumentation symbols, and fluid dynamics phenomena like cavitation and choked flow. Ideal for chemical and mechanical engineering students preparing for midterm evaluations.
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Exam (elaborations)
CHAPTER 9 INTRODUCTION TO REFRIGERATING QUESTIONS WITH ACCURATE ANSWERS
A group of synthetic lubricants compatible with CFC's, HCFCs, and HFCs describes _________ lubricants. correct answer POE A halogenated refrigerant classification with high ODP and no longer manufactured since 1995 describes ___________ correct answer CFC's A measure of liquid's resistance to flow is called _______. correct answer Viscosity A partially halogenated refrigerant classification with 0 ODP but high GWP describes _________ correct answer HFC's A refrigerant cla...
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Exam (elaborations)
A2L PRACTICE TEST QUESTIONS WITH ACCURATE ANSWERS
________ of a combustible gas is the rate at which a flame front spreads relative to the unburned gas ahead of the flame. correct answer Burning velocity _________ is equal to 760,000 microns. correct answer Atmospheric Pressure (0 psig) __________ can form when any flouride-containing refrigerant, even non-flammable A1 refrigerants, undergoes complete or incomplete combustion, or thermal decomposition. correct answer Hydrogen Fluoride (HF) __________ requires that if flammable refriger...
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Exam (elaborations)
Principles of Engineering – Semester 1 Q&A Guide: Mechanical Systems, Gears, Circuits, and Energy Sources
This document includes a complete set of verified questions and answers for Semester 1 of Principles of Engineering. Topics span energy types (renewable, nonrenewable, inexhaustible), mechanical advantage, gear ratios, ramp calculations (ADA), Ohm’s and Kirchhoff’s Laws, circuit types, simple machines, and engineering applications like pulleys and valves. Ideal for high school or early college engineering students preparing for quizzes, tests, or standardized assessments.
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Exam (elaborations)
RTUS A2L CORE 3 QUESTIONS WITH ACCURATE ANSWERS
____ are designed and installed to prevent accumulation and/or ignition of flammable refrigerant vapors should a leak occur correct answer Mitigation Strategies ____ can activate mechanical ventilation systems, activate a solenoid to force the system into a pump down, de-energize the system completely, or a combination of mitigation responses using control logic electronics correct answer Active Sensors ____ can form when any fluorine containing refrigerant undergoes complete or incomplete...
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