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






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






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






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






5. The ____ is a relative indication of how well colors can be distinguished under the light produced by a lamp with a particular color temperature.






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






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






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






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






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






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






12. 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.






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






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






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






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






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






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






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






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






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






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






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






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






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