Certified Facility Manager (CFM) Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Certified Facility Manager Exam. Study with flashcards and multiple-choice questions; each question includes hints and explanations. Get set for success!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What does "strike time" refer to in lighting?

The time required for a lamp to achieve its rated efficiency.
The time needed for a lamp to reach full output from a cold start.
The duration it takes for a lamp to cool down.
The average lifespan of a lamp under high use.

The correct answer is: The time needed for a lamp to reach full output from a cold start.

"Strike time" refers to the time needed for a lamp to reach full output from a cold start. This concept is particularly relevant for certain types of lamps, such as high-intensity discharge (HID) lamps, which do not provide illumination instantaneously after being switched on. Instead, they require some initial time to achieve the necessary temperature and pressure within the lamp to produce light at its rated output. When a lamp is cold, it begins the process of warming up, and during this period, the light emitted typically increases in brightness until it stabilizes at its maximum output. Understanding strike time is crucial for facilities management, particularly in environments where immediate lighting is essential, as it influences planning for lighting needs and schedules.