PASS GUARANTEED 2025 AEE CEM: ACCURATE TEST CERTIFIED ENERGY MANAGER (CEM) DUMPS DEMO

Pass Guaranteed 2025 AEE CEM: Accurate Test Certified Energy Manager (CEM) Dumps Demo

Pass Guaranteed 2025 AEE CEM: Accurate Test Certified Energy Manager (CEM) Dumps Demo

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Tags: Test CEM Dumps Demo, CEM Reliable Study Notes, CEM Test Testking, CEM Reliable Test Voucher, CEM Reliable Test Pdf

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CEM Reliable Study Notes & CEM Test Testking

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AEE Certified Energy Manager (CEM) Sample Questions (Q45-Q50):

NEW QUESTION # 45
A 25-kW motor, at full load, drives a centrifugal fan that produces 160,000 liters per second (l/s) of ventilation air. If the fan speed is reduced to a flow rate of 150,000 l/s, what is the new load on the motor?

  • A. 15.2 kW
  • B. 30.3 kW
  • C. 24.2 kW
  • D. 20.6 kW
  • E. 25.0 kW

Answer: D


NEW QUESTION # 46
Which of the following statements regarding refrigerants is NOT correct?
5ELECT THE CORRECT ANSWER

  • A. R-22 is a Hydro Chloro Carbon with significant ozone depleting potential and significant global warming impact
  • B. R-1234yf is a Hydro Fluoro Olefin with zero ozone depleting potential, and little global warming potential
  • C. R-407C is a blended Hydro Fluoro Carbon or near Azeotropic mixture, and can be used as a replacement for R-22 in commercial applications
  • D. R-11 and R-12 are Chloro Fluoro Carbons with significant ozone depleting potential
  • E. R-32 and R-134a are Hydro Fluoro Carbons with zero ozone depleting potential, and significant global warming impact

Answer: A

Explanation:
Understanding the environmental impacts of various refrigerants is crucial for energy managers. Let's analyze each statement:en.wikipedia.org A:R-407C is a blended Hydro Fluoro Carbon or near Azeotropic mixture, and can be used as a replacement for R-22 in commercial applications:This statement is correct. R-407C is a blend of HFCs designed to replace R-22 in air conditioning systems.
B:R-11 and R-12 are Chloro Fluoro Carbons with significant ozone depleting potential:This is correct. R-
11 and R-12 are CFCs known for their high ozone depletion potential.
C:R-1234yf is a Hydro Fluoro Olefin with zero ozone depleting potential, and little global warming potential:Correct. R-1234yf is an HFO with negligible ozone depletion and low global warming potential.
D:R-22 is a Hydro Chloro Carbon with significant ozone depleting potential and significant global warming impact:This statement is incorrect.R-22 is a Hydrochlorofluorocarbon (HCFC), not a Hydro Chloro Carbon.While it does have ozone-depleting potential, its global warming potential is considered moderate, not significant.
E:R-32 and R-134a are Hydro Fluoro Carbons with zero ozone depleting potential, and significant global warming impact:This is correct. Both R-32 and R-134a are HFCs with no ozone depletion potential but have considerable global warming potential.
Conclusion:
The incorrect statement is D. R-22 is a Hydro Chloro Carbon with significant ozone depleting potential and significant global warming impact. Therefore, the correct answer is D.


NEW QUESTION # 47
A refrigerant-to-water heat exchanger can be added to air-conditioning equipment to heat water using the waste heat in the vapor compression refrigerant cycle. Where is this type of heat exchanger located in the refrigerant loop?

  • A. After the compressor, before the condenser coil
  • B. After the condenser coil, before the thermal expansion valve
  • C. After the evaporator coil, before the compressor
  • D. After the expansion valve, before the evaporator coil

Answer: A


NEW QUESTION # 48
The set point for the chiller supply water temperature is varied as a function of the thermal demand for space cooling. What do you call this control strategy?

  • A. Chilled-water temperature reset
  • B. Reheat coil reset
  • C. Condenser-water temperature reset
  • D. Night setback

Answer: A


NEW QUESTION # 49
Which electric rate tariff would best cost justify a thermal energy storage (TES) system?

  • A. Great differential between high season and low season electricity rates
  • B. Low electricity rate and low peak-demand rate
  • C. Great differential between off-peak and on-peak time-of-use electricity rates
  • D. Great differential between high season and low season demand rates
  • E. High electricity rate and low peak-demand rate

Answer: C


NEW QUESTION # 50
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