Chapter 2 Electrical systems Operations and Maintenance

Question 1

Building manager Tom is concerned with holding voltages to close tolerances in order to achieve:

a. harmonics
b. clean power
c. an uninterruptible power supply (UPS).
d. power during power outages.

Answer 1

b. clean power

Question 2

Max is having an uninterruptible power supply (UPS) system installed in the facility. The main reason for such a system is to:

a. supply generally clean AC.
b. Supply generally clean DC.
c. maintain a constant voltage and frequency.
d. maintain power during power outages.

Answer 2

d. maintain power during power outages.

Question 3

The technician is dealing with a problem of harmonics. Harmonics are distortions of _____ in an electrical system.

a. current but not voltage
b. voltage but not current
c. both current and voltage
d. neither current nor voltage

Answer 3

c. both current and voltage

Question 4

John is managing the renovation of his building’s equipment. the Facility designer has calculated that the max short circuit that could occur for a panel is 14, 000 amperes. which of the following rated circuit breakers would not protect the panel against a fault current

a. 10,000 amperes
b. 14,000 amperes
c. 25,000 amperes
d. 65,000 amperes

Answer 4

a. 10,000 amperes

Question 5

If a buildings power factor is not within the acceptable levels established by the utility, a property manager may have to install equipment to ______ the power factor rating.

a. increase
b. decrease
c. sustain
d. stop

Answer 5

a. increase

Question 6

If the property manager were in charge of a _____, he might find it more economical to have on-site power generation.

a. residential complex
b. small retail store
c. multi-building college campus
d. typical urban office building.

Answer 6

c. multi-building college campus

Question 7

If Diane is to engage in switch-gear maintenance, which of the following steps would she not perform?

a. cleaning
b. excercising
c. testing
d. valuing

Answer 7

d. valuing

Question 8

To improve the reliability of transformers, the most important maintenance function is to continuously remove________

a. coolant
b. heat
c. dust
d. energy

Answer 8

b. heat

Question 9

Because larger generation and distribution facilities are needed to compensate for reduced ssystem efficiency, the property manager can expect _____ charges from the utility company.

a. power factor
b. time of use
c. fuel adjustment
d. miscellaneous

Answer 9

a. power factor

Question 10

a _____ is preferred by many property and facilities managers because it does not include any demand charge.

a. three part rate
b. block meter rate
c. step-meter rate
d. straight-line meter rate

Answer 10

b. block meter rate