Final Test (EMCC)

1. A power factor is the ratio of ____________?

A. kW / kVA

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B. kVA / kW

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C. kVA / kVAr

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D. kVAr / kV

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2. ___________ are centralized control systems designed to monitor, manage, and control various building services, including heating, cooling, ventilation, lighting, and security.

A. BAS

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B. BMS

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C. BACS

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D. All of the above

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3. If 1000 watts of electrical equipment is operated for 1 hour, how much energy is consumed?

A. 1 kWh

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B. 10 kWh

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C. 100 kWh

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D. None of the above

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4. Which component of an HVAC system is responsible for compressing the refrigerant and raising its temperature and pressure?

A. Evaporator

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B. Condenser

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C. Compressor

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D. Expansion Valve

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5. _________ is also known as “Fan Laws” and “Pump Laws”

A. 1st Law of Thermodynamics

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B. Ohm’s Law

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C. Affinity Law

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D. 2nd Law of Thermodynamics

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6. A 55 HP diesel engine running for two hours will deliver ______.

A. 82.06 kWh

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B. 110 kWh

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C. 41 kWh

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D. 1.49 kWh

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7. What are the two main categories of modern boilers?

A. Fire tube and water tube

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B. Combination and system

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C. Condensing and non-condensing

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D. High pressure and low pressure

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8. Determine the energy efficiency of a car engine given that:

Engine delivered 82.06 kWh over 2 hours
Used 20 liters of diesel

A. 30.0%

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B. 38.7%

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C. 24.4%

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D. 4.1%

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9. Ensuring that regular energy audits are carried out is the responsibility of the:

A. Energy manager

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B. Energy auditor

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C. ESCO

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D. All of the above

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10. In determining the audit scope and boundaries, the auditor needs to ensure that these are areas/processes that the organization:

A. Has operational control

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B. Has no operational control

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C. Has identified

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D. Has recommended

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11. Compute for the power savings if a 50HP motor with an efficiency of 91% and a load factor of 80% is replaced with a motor having an efficiency of 95%. Use the following formula.

A. 1.0 kW

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B. 2.2 kW

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C. 1.9 kW

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D. 1.4 kW

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12. Which device listed below, used to measure electric current?

A. Voltmeter

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B. Ammeter

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C. Tachometer

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D. Anemometer

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13. If a 50HP motor with an efficiency of 91% and a load factor of 80% is replaced with a motor having an efficiency of 95%. Compute the energy savings if the motor operates for 8,760 hours per year

A. 11,382 kWh

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B. 12,264 kWh

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C. 9,500 kWh

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D. 16,000 kWh

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14. The power demand of a fan at full speed is 10kW. What is the power demand when the speed of the fan is slowed down to 80%.

A. 5.12 kW

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B. 3.12 kW

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C. 4.12 kW

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D. 6.12 kW

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15. What lighting type typically used for circulation and general lighting to give a “sense of space?

A. Ambient Lighting

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B. Task Lighting

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C. Accent Lighting

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D. Multi Lighting

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16. _____ is a device that converts electrical energy into a mechanical energy.

A. Capacitor

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B. Conveyor

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C. Electric Motor

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D. Transformer

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17. A 500kVA substation @ 95% Power Factor, find max load @ 80% capacity.

A. 380 kW

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B. 480 kW

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C. 280 kW

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D. 180 kW

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18. _________ is a systematic analysis of energy use and energy consumption in order to identify, quantify and report on the opportunities of improved energy performance.

A. Internal audit

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B. Third party audit

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C. Energy audit

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D. External audit

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19. What is the purpose of an economizer in a boiler system?

A. To preheat the combustion air

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B. To pre-heat the feedwater

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C. To reduce stack temperatures

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D. To increase the amount of excess air

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20. Which of the following is not a financial mechanism commonly employed by utilities to encourage the development of distributed energy technologies?

A. Net metering

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B. Power-Purchase Agreement

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C. Energy performance contract

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D. Rebate

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21. An electricity rate structure charged by a utility that varies for different hours of the day is called:

A. Demand ratchet

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B. Demand charge

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C. Time of use rate

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D. Tiered rate

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22. A penalty imposed on a Designated Establishment (DE) for failure to submit AEECR and AEUR on 1st offense.

A. None

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B. Php 100,000.00

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C. Php 500,000.00

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D. Php 1,000,000.00

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23. The lumen depreciation factor of a lighting system is 0.85 and the dirt depreciation factor is 0.8. What is the overall light loss factor?

A. 0.85

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B. 0.68

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C. 1.65

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D. 0.80

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24. DEs that are allowed to conduct in-house energy audits by their own CEA subject to validation by a DoE Registered or Certified Energy Service Companies (ESCO) or DoE-Certified Energy Auditor.

A. Type 1

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B. Type 2

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C. Type 3

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D. Type 2 and Type 3

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25. The reactive power is represented by what unit?

A. kVA

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B. kW

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C. kVAr

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D. PF

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26. The two biggest source of greenhouse gas emissions in the Philippines in 2022 are:

A. Power generation and transportation sectors

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B. Electricity and power generation sectors

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C. Electricity and industrial sectors

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D. Manufacturing and commercial sectors

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27. DEs need to submit Energy Audit Reports during the first year of their compliance and every _____ , thereafter.

A. 1 year

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B. 2 years

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C. 3 years

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D. 4 years

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28. A gas undergoes an isobaric (constant pressure) expansion from a volume of 3 cubic meters (m³) to 8 cubic meters (m³) at a constant pressure of 150 kPa. Calculate the work done by the gas during this expansion process.

Use the formula for work done during an isobaric process: Q = P⋅ΔV

A. 550 KJ

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B. 750 KJ

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C.700 KJ

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D. 680 KJ

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29. Installing “controls” to effectively manage energy refers to technical, organizational and __________ approaches.

A. Financial

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B. Behavioral

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C. Operational

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D. Strategic

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30. If upon evaluation, an establishment is found to be noncompliant to energy audit report submission, what is the appropriate management action based on performance evaluation clause of ISO 50001:2018

A. Implement corrective action to fulfil a legal requirement

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B. Indicate an objectively verifiable indicator (OVI)

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C. Maintain documented information on the finding

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D. Conduct internal audit

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31. ____________ provides a framework for setting and reviewing objectives and energy targets and is the basis for establishing actions plans to meet the energy goals and objectives.

A. Energy policy

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B. Energy management system

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C. Management commitment

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D. P-D-C-A

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32. Preventing energy consumption to rise again, after it has decreased as a result of energy conservation and efficiency efforts is the main concern of the concept of _______________.

A. Improvement

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B. P-D-C-A

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C. Both A and B

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D. Controls

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33. Type of electric current that flows in one direction through a circuit is ________ ?

A. DC

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B. AC

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C. AC/DC

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D. None of the Above

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34. The purpose of ASHRAE Standard 189.1 is to

A. Specify minimum requirements for HVAC system energy performance.

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B. Establish a green building assessment protocol.

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C. Specify minimum requirements for the design of green buildings.

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D. Establish methods of testing the seasonal efficiency of air conditioners and heat pumps.

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35. __________ specifies which data to collect, how to collect them and how often to collect them.

A. Energy review

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B. Data collection plan

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C. Energy action plan

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D. Measurement plan

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36. An electricity rate offered by utilities to encourage customers to use less energy at peak times to alleviate demand in the distribution network.

A. Demand rate

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B. Time-of-use rate

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C. Tiered or block rate

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D. Unit rate

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37. A large picture window in a home overlooks a scenic view but also faces the afternoon sun, leading to increased heat inside the house. The window measures 2.5 m by 2 m, and the temperature difference between the outside and the inside during a sunny afternoon is 20°C. The overall heat transfer coefficient (U-value) of the window is 1.1 W/m²·°C. Calculate the heat gain through the wind.

Use the formula: H=U⋅A⋅ΔT

A. 120 W

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B. 140 W

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C. 130 W

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D. 110 W

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38. The practice of energy benchmarking allows company to compare energy consumption to that of other similar plants. This helps companies set realistic savings target in which stage of energy management?

A. Planning and auditing

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B. Planning and monitoring

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C. Monitoring and targeting

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D. Measurement and verification

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39. What is the purpose of the building envelope?

A. To provide fresh air to the occupants.

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B. To regulate the indoor environment.

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C. To provide lighting to the occupants.

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D. To provide shelter to the occupants

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40. The driving force that causes electrons to flow across a circuit?

A. Current

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B. Voltage

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C. Resistance

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D. Power

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41. Quantities measured by the electric meter and used to determine the amount of monthly electric bills.

A. Demand and energy

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B. Kilowatt hours used and billing demand

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C. Maximum demand and energy consumed

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D. All of the above

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42. Situations where there was no energy efficiency improvements made, no malfunctions occurred and production rate is typical, serves as a suitable ________ to determine relationship between energy consumption and production.

A. Baseline

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B. Variation

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C. Expression

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D. Performance

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43. A steam generator in a small power plant produces superheated steam. Water at a flow rate of 2,000 kg/hr enters the generator at 120°C and exits as superheated steam at a temperature of 300°C. The specific enthalpy of liquid water at the inlet is 504 kJ/kg, and the specific enthalpy of superheated steam at the outlet is 3,080 kJ/kg. Calculate the heat transfer rate required in the steam generator.

A. 1230.9 kW

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B. 1319.2 kW

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C. 1429.25 kW

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D. 1592.3 kW

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44. Which of the following is not among the many tasks of the energy manager:

A. Identify external expertise needed

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B. Assist future energy needs

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C. Recommend salary rates of technical workforce

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D. Conduct energy audits

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45. Knowing and ensuring compliance with legal and other requirements of RA 11285 is the duty of the:

A. Energy auditor

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B. Energy manager

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C. Legal officer

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D. All of the above

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46. Which of the following is a selection criterion for choosing the right compressor?

A. Temperature

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B. Color

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C. Humidity

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D. Capacity

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47. What lighting quantity is the unit of measure to the actual output of the lamp?

A. Foot-Candle

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B. Lux

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C. Lumens

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D. Watts

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48. In the context of HVAC, what does VAV stand for?

A. Variable Air Volume

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B. Very Airy Ventilation

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C. Viscous Air Velocity

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D. Ventilation Adjustment Valve

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49. A 500kVA substation @ 70% Power Factor, find max load @ 80% capacity.

A. 380 kW

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B. 480 kW

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C. 280 kW

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D. 180 kW

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50. Which one is an energy efficiency measure?

A. Using sensors to turn-off light when not needed

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B. Unplugging appliances when not in use

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C. Vehicles with high fuel economy

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D. Walking instead of driving

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