最新的 Energy Management CEM 免費考試真題:

1. If installed without ancillary equipment, photovoltaic power cells generate what type of power?

A) Square-wave alternating current
B) Direct current
C) Sinusoidal alternating current

2. Electricity costs SO. 10 per kWh. if an electric water heater has an efficiency of 95*6. what is the equivalent price of natural gas per Gigajoule for a natural gas water heater? The natural gas water heater has an efficiency of 95*t based on lower-heating value.
[Natural gas has an energy content of 36.400 K|/m3 (higher-heating value) and 32-760 K/m3 (lower-heating value).] SELECT THE CORRECT ANSWER

A) $33 /GJ
B) $25 /GJ
C) $21 /GJ
D) $15/GJ

3. Which of the following is NOT a renewable-energy resource?
SELECT THE CORRECT ANSWER

A) Crop residue
B) Geothermal heat
C) Ocean waves
D) Shale gas
E) Saw grass

4. What is the uniform series present worth factor (P/A, i%, n) for an annual interest rate of 15% and a lifetime of 20 years?

A) 4.676
B) 0.160
C) 6.259
D) 0.214

5. An air conditioning unit cools make-up air from 25°C (dry bulb temperature) and 50% relative humidity down to 13°C. What type of heat has been removed from the air?

A) Latent heat
B) Sensible heat
C) No heat energy has been removed
D) Both sensible and latent heat

問題與答案：