Showing posts with label Power Engineering Chapter 110. Show all posts
Showing posts with label Power Engineering Chapter 110. Show all posts

An advantage of low voltage switching is

An advantage of low voltage switching is






a) that local and remote control of lights is permitted
b) the wiring does not require conduits
c) changes are simple and economical
d) a and b are correct
e) a, b and c are correct








Answer: E

A luminaire is a

A luminaire is a




a. Type of light reflector
b. Type of light refractor
c. Lamp ballast
d. Complete lighting unit
e. Type of lamp








Answer: D

One of the main types of illumination is:

One of the main types of illumination is:





a. Emergency lighting
b. Direct lighting
c. General (uniform) lighting
d. Structural lighting
e. Indirect lighting







Answer: C

Direct lighting systems:

Direct lighting systems:




a. Have a higher initial cost than indirect lighting
b. Have greater glare control
c. Are more energy efficient than indirect lighting
d. Produce shadow free light
e. Blend with the environment






Answer: C

When control for multiple locations is required:

When control for multiple locations is required:




a. A 4-way switch is used
b. The system must be an engineered design, according to the Canadian Electrical Code
c. A local building permit is required.
d. A combination of 3-way switches and 4-way switches are used
e. Three or more two-way switches are used







Answer: D

Occupancy sensors:

Occupancy sensors:




a. Are Semi-automatic switches
b. Are Self-regulating switches
c. Are Automatic switches
d. Dim the lights when the room is unoccupied
e. Are best suited where fluorescent lights are frequently turned on and off







Answer: C

Most dimmer switches sold today:

Most dimmer switches sold today:




a. Divert some current through a variable resistor
b. Can be used with incandescent or florescent lighting
c. Save most of the power not being used by the luminaire
d. Can control the lighting level from 0 to 100%
e. Are not cost effective as energy savers






Answer: C