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

質問 1

If outside air has a temperature of 30°C dry bulb and 20°C wet bulb, what is the dew point temperature?

（A）25°C

（B）20°C

（C）30°C

（D）15°C

正解：B 解答を投票する

質問 2

How can commissioning reduce the life-cycle cost to owners and operators?

（A）Improve the performance of energy systems

（B）Improve the effectiveness of operations and maintenance

（C）All of the above

（D）Reduce the cost of change orders during construction

（E）Improve the satisfaction of building occupants

正解：C 解答を投票する

質問 3

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）$15/GJ

（C）$21 /GJ

（D）$25 /GJ

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 4

A facility has the thermal cooling load profile shown in the table below. The utility rate tariff has an on-peak time-of-use billing period that begins at 10:00 a.m. and ends at 7:00p.m. Calculate the storage capacity required for a load-shifting operating strategy, to make sure that no thermal cooling Is generated by the chiller during the on-peak utility rate period.

[Question from the previous image, which was about storage capacity for load shifting, but the table was missing]

（A）66 GJ

（B）84 GJ

（C）48 GJ

（D）72 GJ

正解：A 解答を投票する

質問 5

When should commissioning be included in the design and construction of a facility?

（A）When construction is finalized

（B）When the design is finalized

（C）When the occupancy permit is accepted

（D）When the planning process begins

（E）When installation of the energy systems begins

正解：D 解答を投票する

質問 6

The temperature in an unconditioned mechanical room is found to typically be around 23°C warmer than ambient air. If the air intake of an air compressor located in the mechanical room is routed through a nearby wall so that ambient air is fed directly to the air compressor's intake, what impact can be expected on the air compressor's energy requirement?

（A）No measureable change in energy use

（B）Decrease energy use by 7.6%

（C）Increase energy use by 7.6%

（D）Decrease energy use by 3.8%

（E）Increase energy use by 3.8%

正解：B 解答を投票する

質問 7

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

正解：A 解答を投票する

質問 8

The International Performance Measurement and Verification Protocol (IPMVP) has how many categories (method options) to determine the performance of an energy- or water-consuming system?

（A）2 Options

（B）4 Options

（C）3 Options

（D）5 Options

（E）6 Options

正解：B 解答を投票する

質問 9

Which of the following statements best describe Demand Control Ventilation (DVC) in Building Automation Systems?

（A）It's a prescriptive procedure in which outdoor air intake rates are calculated based on the energy cost method that compares a proposed building design to a base annual energy cost design

（B）It satisfies indoor ventilation rates by preconditioning outdoor air with the exhaust air to decrease energy cost during cold, warm, or humid weather

（C）It's an active evaluation of outdoor and indoor space conditions to determine the amount of thermal, mechanical and natural conditioning that is required

（D）It's a building standard for enclosed spaces in which biological, chemical, and physical contaminants are considered to meet thermal comfort requirements

正解：C 解答を投票する

質問 10

Using an interest rate of 15%, an energy project has a net-present value (NPV) of $3,500. Which statement is true about the project's internal rate of return (IRR)?

（A）IRR = 15%

（B）IRR < 15%

（C）IRR < 0%

（D）IRR > 15%

正解：D 解答を投票する

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

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