PDH Engineer     PE PDH
PDH Online

Energy Efficiency Lighting


Quiz Questions

1.Compact Fluorescent Lamps use a different, ______ advanced technology than incandescent light bulbs and come in a range of styles and sizes based on brand and purpose.
More
Less
Equal
2. CFLs use about 2/3 less energy than standard incandescent bulbs, give the same amount of light, and can last __ to __ times longer.
6 to 10
50 to 80
100 to 150
3.CFL prices range from $4 to $15 depending on the bulb, but you save about $25 to $30 per bulb on energy during the lifetime of the bulb.
True
False
4.When looking to purchase CFLs in place of incandescent bulbs, compare the light output, or Lumens, and not the watts.
True
False
5.Passive infrared sensors react to changes in ____, such as the pattern created by a moving person. The control must have an unobstructed view of the building area being scanned. Doors, partitions, stairways, etc. will block motion detection and reduce its effectiveness. The best applications for passive infrared occupancy sensors are open spaces with a clear view of the area being scanned.
Heat
light
6.Ultrasonic sensors transmit sound above the range of human hearing and monitor the time it takes for the sound waves to return. A break in the pattern caused by any motion in the area triggers the control. Ultrasonic sensors can see around obstructions and are best for areas with cabinets and shelving, restrooms, and open areas requiring 360-degree coverage.
Sound
Heat
7.Some occupancy sensors utilize both passive infrared and ultrasonic technology, but are usually more expensive. They can be used to control one lamp, one fixture or many fixtures.
True
False
8.The key tag system uses a master switch at the entrance of each guest room, requiring the use of a room key-card to activate them. Using this technique, _________ consume energy because most electrical appliances are switched off when the keycard is removed (when the guest leaves the room). Along with lighting, the heating, air conditioning, radio and television may also be connected to the master switch. This innovation has a potential savings of about $105.00 per room per year.
Only occupied rooms
All the rooms
9.High intensity discharge (HID) lighting is much more efficient and preferable to incandescent, quartz-halogen and most fluorescent light fixtures. HID types (from least to most efficient) include mercury vapor, metal halide and high pressure sodium. Mercury vapor is seldom used anymore. Both metal halide and high pressure sodium are excellent outdoor lighting systems. High pressure sodium has a pink-orange glow and is used when good color rendition isn’t critical. Metal halide, though less efficient, provides clean white light and good color rendition.
True
False
10.Photo sensor controls monitor daylight conditions and allow fixtures to operate only when needed. Photo sensors detect the quantity of ______ and send a signal to a main controller to adjust the lighting. Photo sensors are commonly used with outdoor lighting to automatically turn lights on at dusk and off at dawn, a very cost-effective control device. This helps to lower energy costs by ensuring that unnecessary lighting is not left on during daytime hours.
Light
heat