Test your basic knowledge |

Subject : engineering
Instructions:
  • Answer 25 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The ____ is a relative indication of how well colors can be distinguished under the light produced by a lamp with a particular color temperature.






2. Used as a starting place for an energy management program - lighting can attract _____ - since everyone has ideas about lighting.






3. When ____ in a lighting fixture fail - replacement with ____ should be considered.






4. Unlike ____ - some ____ can be dimmed - but they also can produce significant levels of harmonic distortion.






5. ____ which can replace the standard lamps can reduce power demand and energy use by about 15%.






6. Fixtures subject to direct discharge from air- conditioning vents are not good candidates for ____.






7. The ____ of a lighting fixture is the ratio of the light leaving the fixture to the light produced by the lamps.






8. ____ can be installed as a screw- in or hardwired conversion kit and have a lifetime of at least 10 -000 hours.






9. Replacing ____ - ____ and ____ with newer - more energy- efficient models offers the potential for significant savings on lighting system cost in many facilities.






10. A lighting system consists of _____ - ____ - and ____.






11. The basic ratings include: ____ - ____ - ____ - ____ - ____ and ____.






12. The _____ of a lamp is an estimate of the light output (lumens) divided by the electrical power input (watts) under test conditions.






13. Lighting improvements are excellent investments in most commercial businesses because lighting accounts for a large part of the energy bill - ____.






14. ____ are directional and useful for active areas; ____ are fairly non - directional.






15. The energy manager should be sensitive to ____ when recommending changing lighting changes and should not recommend changing _____ unless nearly everyone is in favor of the proposed change.






16. _____ render colors well - are inexpensive to purchase - easily dimmed - small - and controllable which is useful for product display.






17. Unfortunately - many design decisions are made on the basis of ____ which include operation and maintenance cost.






18. The T- measure for a fluorescent lamp is ____.






19. Fluorescent lamps are available in ____ - ____ - and ____ configurations.






20. Light from ____ is produced indirectly by a cathode exciting a gas in which an electrical arc forms which then emits light.






21. Often - ____ to buy is not the least expensive to operate.






22. Some ____ can be installed in fixtures designed to operate mercury vapor lamps.






23. Many older ballasts - especially those manufactured before 1975 - utilized ____ which contains some of the most toxic chemicals known.






24. The ____ provides many opportunities for cost- effective energy savings with little or no inconvenience.






25. Using ____ - or cleaning these surfaces more often can make the existing light more effective and thereby save money.