CEM試験無料問題集（132題）「AEE Certified Energy Manager (CEM) 認定」

出題：1

At the end of a performance contract, who owns the equipment installed by the project?

A. The company that paid the contract payments

B. The energy service company

C. The bank

D. The equipment manufacturer

正解：A 解答を投票する

出題：2

Using the natural gas combustion efficiency tables in your workbook, find the combustion efficiency (based on higher-heating value) of a natural-gas-fired boiler if the excess air level is measured at 31.9% and the stack temperature rise is 187.8°C.

A. 76%

B. 80%

C. 84%

D. 82%

E. 78%

正解：D 解答を投票する

出題：3

Air is heated from 10°C (dry bulb temperature) and 80% relative humidity to 32°C (dry bulb temperature).
What is the new relative humidity?

A. 20%

B. 80%

C. 40%

D. 60%

E. 30%

正解：A 解答を投票する

出題：4

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?

A. Compressor B

B. Both air compressors have the same life-cycle cost

C. Compressor A

正解：A 解答を投票する

出題：5

Which of the advantages listed below, makes an ice TES system more preferred over a water TES system, when a load shifting strategy is considered?

A. Water-storage systems require smaller storage tanks since water has a higher density than ice

B. Ice-storage systems operate with a higher coefficient of performance (COP)

C. Ice-storage systems require lower maintenance due to lower pumping volume

D. Ice-storage systems require smaller storage tanks since ice has a higher energy storage density

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：6

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. 24.2 kW

B. 20.6 kW

C. 25.0 kW

D. 30.3 kW

E. 15.2 kW

正解：B 解答を投票する

出題：7

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

A. Sinusoidal alternating current

B. Square-wave alternating current

C. Direct current

正解：C 解答を投票する

出題：8

What type of heat transfer is reduced by adding insulation to the inside surface of a wall?

A. Radiation

B. Convection

C. Conduction

正解：C 解答を投票する

出題：9

Which of the following is NOT a typical benefit of performance contracting from the building owner's perspective?

A. The energy-service company can have a financial incentive to achieve projected savings

B. Maintenance services provided by the performance contractor can add value to the overall savings achieved

C. Performance contracting can provide access to external financing when the owner may not have sufficient equity for in-house financing for large projects

D. Net cash flow can be neutral or positive for the owner

E. Performance contracting is a simple and quick process

正解：E 解答を投票する

出題：10

A compressed-air distribution system has one section that frequently has low pressure when demand for compressed air is high. How can you resolve the problem without increasing energy consumption?

A. Install a receiver tank near the remote load experiencing low pressure

B. Decrease the distribution pipe size to the remote load experiencing low pressure

C. Raise the supply air pressure

D. Answers B and C

正解：A 解答を投票する

CEM試験無料問題集「AEE Certified Energy Manager (CEM) 認定」