CEA Lighting & Environmental Factors Flashcards
6 cards from real CEA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CEA Lighting & Environmental Factors flashcards as text
Which environmental factor is MOST directly associated with Sick Building Syndrome (SBS) complaints?
Answer: Poor indoor air quality and inadequate ventilation
SBS is primarily linked to poor ventilation, volatile organic compounds, and biological contaminants in indoor air.
The ASHRAE 55 standard defines a comfort zone primarily based on which two variables?
Answer: Operative temperature and relative humidity
ASHRAE 55 defines comfort envelopes using operative temperature on one axis and relative humidity on the other.
What CLO value approximately represents typical business casual clothing worn in a US office?
Answer: 1.0 clo
Typical business casual office attire (trousers, long-sleeve shirt, light jacket) approximates 1.0 clo of thermal insulation.
Excessive vibration transmitted to the hand-arm system is MOST associated with which condition?
Answer: Raynaud's phenomenon / Hand-Arm Vibration Syndrome (HAVS)
Prolonged exposure to hand-transmitted vibration damages blood vessels and nerves, causing HAVS/Raynaud's phenomenon.
ISO 2631 provides guidance for evaluating human exposure to which physical stressor?
Answer: Whole-body vibration
ISO 2631 specifies methods for evaluating whole-body vibration and its potential health, comfort, and motion-sickness effects.
Which approach BEST controls glare from a window in an office workstation?
Answer: Position the monitor perpendicular to the window and use adjustable blinds
Placing the monitor perpendicular (at 90°) to the window and controlling window luminance with blinds minimizes both direct and reflected glare.