Building Automation Lesson 3

Question 1

Proper indoor lighting improves the___of the building occupants

Answer 1

Productivity

Question 2

What are the functions of outdoor lighting at night?

Answer 2

1. Improves security
2. Signage illumination
3. Enhances landscape features

Question 3

____is a lighting system that controls lights throughout a building via one main control panel.

Answer 3

Centralized- lighting control

Question 4

List two disadvantages of a centralized lighting control system

Answer 4

1. Requires long runs of conductor

2. Susceptible to widespread failure if there is a problem with the control panel

Question 5

What percentage of energy produces by lamps is not visible (infrared,uv,heat)?

Answer 5

65-90%

Question 6

What is the most common type of lighting installation

Answer 6

Down lighting

Question 7

___is the intentional reduction of electrical power to a lamp in order to reduce its light output.

Answer 7

Dimming

Question 8

How is light output measured?

Answer 8

Lumens

Question 9

“Mean” lumens is the rated average intensity of light produced by a lamp after it has operated for approximately____of its rated life.

Answer 9

40%

Question 10

List the types of lamps that are commonly used in commercial buildings (4 types)

Answer 10

Incandescent
Fluorescent
Halogen
HID

Question 11

The higher temperatures of a halogen lamp can improve the luminous efficacy up to about___.

Answer 11

18-24 lm/w

Question 12

A___is an electric lamp that produces light by striking an electrical arc across tungsten electrodes housed inside an arc tube.

Answer 12

HID

Question 13

Where are HID lamps typically used?

Answer 13

• General lighting that is switched on a schedule

- light operated for long periods of time

Question 14

What type of HID lamp has an extra starting electrode?

Answer 14

Mercury vapor