Weekend Special 70% Discount Offer - Ends in 0d 00h 00m 00s - Coupon code: save70

Complete CEM AEE Materials

Page: 3 / 10
Total 130 questions

Certified Energy Manager (CEM) Questions and Answers

Question 9

Which of the following statements regarding refrigerants is NOT correct?

5ELECT THE CORRECT ANSWER

Options:

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

B.

R-11 and R-12 are Chloro Fluoro Carbons with significant ozone depleting potential

C.

R-1234yf is a Hydro Fluoro Olefin with zero ozone depleting potential, and little global warming potential

D.

R-22 is a Hydro Chloro Carbon with significant ozone depleting potential and significant global warming impact

E.

R-32 and R-134a are Hydro Fluoro Carbons with zero ozone depleting potential, and significant global warming impact

Question 10

You can buy air compressor A for $15,000 or air compressor B for $6,000. Compressor A will cost $10,000 per year to operate. Compressor B will cost $11,500 per year to operate. If both air compressors have a 10-year life and your required return on investment is 12%, which air compressor has the lowest total life-cycle cost?

Options:

A.

Compressor A

B.

Compressor B

C.

Both air compressors have the same life-cycle cost

Question 11

A building is conditioned by an air-conditioning and heating system. What technology can directly prevent simultaneous heating and cooling of the space?

Options:

A.

Derivative control

B.

Air handling unit

C.

Variable air volume control

D.

Setback thermostat

E.

Indoor air quality sensors

Question 12

A 100-kW electrical load has a power factor of 75%. What capacitance, in KVAR, will improve the power factor to 95%?

Options:

A.

15.7 kVAR

B.

25.3 kVAR

C.

33.1 kVAR

D.

45.2 kVAR

E.

55.3 kVAR

Page: 3 / 10
Total 130 questions