Question 1

On lighting controlled by timers, an ____ feature is extremely desirable because it provides sunset ON and sunrise OFF that change automatically day by day as the sunrise and sunset times change every day.

Accepted Answer

The correct choice is "astronomic" because an astronomic feature in lighting timers adjusts the on and off times based on the daily changes in sunrise and sunset times, aligning with astronomical data.

Question 2

The lighting circuits that are considered to be the owner's responsibility can be divided into six groups according to the method used to control the circuit, including those under ____.

Accepted Answer

Photocell control is a common method used to control lighting circuits, typically considered the owner's responsibility, as it involves automatic adjustment based on ambient light levels.

Question 3

In the boiler heating circuit in the chapter example, the main lugs connect to two ____-kcmil-per-phase conductors run to an 800-ampere switch.

Accepted Answer

The correct choice is 500-kcmil-per-phase conductors, as this size would be appropriate for connecting to an 800-ampere switch in a boiler heating circuit, providing the necessary capacity for such a load.

Question 4

Summarize the wiring requirements for a boiler.

Accepted Answer

The answer of Summarize the wiring requirements for a boiler....

Question 5

In a commercial building, it is the ____ responsibility to provide power for the elevator; illumination for the public areas such as hallways, stairways, and public toilet rooms; and heat for the common areas of the building.

Accepted Answer

The owner of a commercial building is typically responsible for providing essential services such as power for elevators, lighting for public areas, and heating for common spaces. This ensures the building meets safety and operational standards for all occupants and visitors.

Question 6

Describe the wiring for electric elevators, including the roles of the electrical contractor and the elevator contractor.

Accepted Answer

The answer of Describe the wiring for electric elevators, including...

Question 7

What features are available with electronic and mechanical timers?

Accepted Answer

The answer of What features are available with electronic and...

Question 8

The luminaires installed for the stairway to the second floor and hallways of the commercial building example in this chapter are ____ when the building is occupied because those spaces have no windows.

Accepted Answer

Luminaires in stairways and hallways of commercial buildings without windows need to be in continuous operation when the building is occupied to ensure safety and visibility, as there is no natural light available.

Question 9

One type of sump pump that is available commercially has a start-stop operation due to water pressure against a ____, which in turn pushes against a small integral switch within the submersible pump.

Accepted Answer

The answer of One type of sump pump that is...

Question 10

The sump pump motor is protected by a manual motor starter and is controlled by a ____ switch.

Accepted Answer

The correct answer is a float switch, which is commonly used to control sump pump motors by detecting the level of liquid in the sump pit and turning the pump on or off accordingly.

Question 11

In the commercial building example of this chapter, the owner may choose to install an electrically heated ____ to supply heat to all areas.

Accepted Answer

Boilers can be electrically heated and are commonly used in commercial buildings to supply heat to all areas by circulating hot water or steam through pipes to radiators, convectors, or underfloor heating systems.

Question 12

The heat sensor in an electrically heated boiler is adjusted so that it closes when the outside temperature falls below a set point, usually ____ degrees Fahrenheit.

Accepted Answer

The heat sensor in an electrically heated boiler is typically adjusted to close when the outside temperature falls below 65 degrees Fahrenheit, as this is a common set point for heating systems to activate in order to maintain comfortable indoor temperatures.

Question 13

With a "____" elevator, the entire elevator lifting mechanism is located in the elevator shaft either on the elevator or on the wall.

Accepted Answer

Machine-room-less elevators have their lifting mechanisms located in the elevator shaft itself, eliminating the need for a separate machine room.

Question 14

The ____ is(are)an example(s)of equipment that is operated by an automatic control system.

Accepted Answer

Sump pumps are often operated by automatic control systems that activate them when water reaches a certain level, ensuring basements or crawl spaces remain dry without manual intervention.

Question 15

In the commercial building in the chapter example, what do the owner's circuits serve?

Accepted Answer

The answer of In the commercial building in the chapter...

Question 16

With an electrically heated boiler, a heat sensor plus a remote bulb is mounted so that the bulb is ____.

Accepted Answer

The answer of With an electrically heated boiler, a heat...

Question 17

The building's occupants will each have a(n)____ located within their particular area.

Accepted Answer

A heating thermostat is the device among the options that would typically be located within a particular area of a building for occupants to control the temperature of their individual spaces.

Question 18

The photocell control device consists of a light-sensitive cell and a(n)____ that increases the signal until it is sufficient to operate a relay that controls the light.

Accepted Answer

An amplifier is used in a photocell control device to increase the signal from the light-sensitive cell until it is strong enough to operate a relay that controls the light.

Question 19

How is the sump pump used, and what is the mechanism of control?

Accepted Answer

The answer of How is the sump pump used, and...

Question 20

The circuit to the hot-water circulating pump in the chapter example will be supplied from the ____ so that the water will continue to circulate if the utility power fails.

Accepted Answer

The optional standby power panel is designed to supply power to essential circuits during a utility power failure, ensuring the hot-water circulating pump continues to operate.

Quiz 11: Special Circuits Owners Circuits