Question 1

Calculate the monthly electric bill for a customer that used 400 kW and 75,000 kwh during one month. Use the following declining block structure for a monthly bill:

SELECT THE CORRECT ANSWER

Options :

A : $3,280

B : $4, 580

C : $7,850

D : $9,660

E : $12,500

Answer: D

Question 2

How does an enthalpy-based economizer control operate?

Options :

A : Using a constant mixed air proportion control sequence

B : Comparing the difference in dry-bulb air temperature measurements of the return air and the outdoor air

C : Measuring the outdoor air dry-bulb temperature and relative humidity

D : Using the dry-bulb temperature and relative humidity of both the outdoor-air and return-air

Answer: D

Question 3

Which pump system listed below is most likely the best application for converting to variable-speed drive?

Options :

A : Pump system with parallel rotary lobe pumps in a rebar quenching application with a static head of 80m

B : Pump system with on-off control transferring liquid vertically from a low tank to a higher tank

C : Pump system with bypass control transferring liquid from an intake dam to a process in production

D : Pump system with throttle fully open circulating liquid in a closed loop cooling system

Answer: D

Question 4

Insulation has a thermal conductivity of 0.04 Watt/(m-°C). What is the R-value for this insulation when it is 5- cm thick?

Options :

A : 0.8 (m²-°C)/Watt

B : 1.25 (m²-°C)/Watt

C : 2.20 Watt/m²

D : 20 Watt/(m²-°C)

E : 20 (m²-°C)/Watt

Answer: B

Question 5

Which of the following is NOT included in commissioning documentation?

Options :

A : Original facility and equipment design intent

B : As-built drawings

C : Financing payment structure reportsc

D : Equipment control sequence documentation

E : Equipment operations and maintenance manuals

Answer: C

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