Chapter I Electricity and Electrical Systems

Question 1

If Stacy were to select an optimum conductor for the flow of electricity, she would select an electrical conductor that has less________

a. cable
b. wire
c. resistance
d. electrons

Answer 1

c. Resistance

Question 2

Due to expense, ______ has limited us in commercial buildings and is generally restricted for use in high-speed elevators.

a. AC
b. AC-DC
c. DC
d. Electrons.

Answer 2

C. DC

Question 3

The building extension is to serve as general office space. As such, it will require ____ power for its lighting and receptacles.

a. single-phase
b. dual-phase
c. three-phase
d. four-phase

Answer 3

A. single phase

Question 4

If David is to properly ground the electrical equipment, he cannot do this by attaching a grounding wire to:

a. a meal rod inserted into the earth.
b. the buildings steel frame buried in the earth.
c. the buildings plumbing system buried in the earth.
d. the buildings water tower located on the rooftop.

Answer 4

d. the buildings water tower located on the rooftop.

Question 5

Ohm’s law describes the relationship among all of the following units of measure except:

a. voltage.
b. resistance
c. current.
d. power

Answer 5

d. power

Question 6

Sue is selecting electrical protection for building occupants where significant shock hazards could possibly occur. What is the safest selection?

a. a circuit breaker
b. a GFCI
c. a fuse
d. an electrical outlet.

Answer 6

b. GFCI

Question 7

The function of a transformer is to change the ____ of the electricity passing through it.

a. amperage
b. power
c. resistance
d. voltage

Answer 7

d. Voltage

Question 8

As a property manger, Bob should analyze the history of local power outages and the inconvenience and cost sustained by a loss of power before accepting a _____ when other services are available.

a. single service
b. dual service
c. normal reserve service
d. transformer

Answer 8

a. single service

Question 9

As part of a building renovation and planning for the electrical distribution system, facilities manager Chris should first determine the watts per square foot to estimate the:

a. air-conditioning load
b. people load
c. building load
d. lighting load

Answer 9

c. building load

Question 10

New electrical installations must be inspected by a qualified agency and approved for ____ compliance before a utility company will initiate service

a. insurance
b. committee
c. fire
d. code

Answer 10

d. code

Question 11

To ensure a circuit is de-energized and to prevent any possibility of shock or electrocution, a procedure required by OSHA known as \_\_\_\_\_\_ should be performed.
a. lockout/tagout
b. training
c, unlock/tag
d. none of the above.

Answer 11

a. lockout/tagout