AEE Certified Energy Manager (CEM) 認定 CEM 試験問題:

1. What is a common method to reduce the impact of voltage imbalance?

A) Install capacitors to improve power factor on three-phase loads
B) Reverse phase connections on three-phase motors
C) Install harmonic filters
D) Rebalance single-phase loads

2. A piece of equipment costs $250,000 to buy and install. The annual operating cost for the equipment is
$50,000 per year. The equipment will last 15 years. After 15 years, the equipment will have no net salvage value. The annual interest rate is 10%. What is the present value of the life-cycle cost to own and operate the equipment? Use end-of-year annual cash flow analysis.

A) $250,000
B) $756,113
C) $556,945
D) $630,300

3. What is the best type of heat exchanger to recover and transfer latent heat energy from one air stream to another?

A) Heat pipe
B) Ceramic recuperator
C) Shell and tube
D) Desiccant heat wheel
E) Run-around system

4. Lighting systems operate with a certain recoverable light loss factor. Control systems with photocell sensor inputs combined with dimming ballasts can be used to regulate dimming levels to maintain a continuous light level in the work space. Which of the following best describes this type of control?

A) Open-loop controller
B) Closed-loop controller
C) Demand-limiting controller
D) Two-position controller

5. Which type of single-phase alternating-current motor has the highest efficiency?

A) Permanent split-capacitor motor
B) Shaded-pole motor
C) Electronic-commutated motor

質問と回答：