ELECTRICAL LEVEL 3 MODULE 3
***3.2.0
Ultra sonic sensors transmit ____ and receive a reflected signal to sense the movement
of occupants in a space - ANS - Ultrasound at a frequency between 25kHz and 40kHz
***3.2.0
Ultrasonic sensors detect __ - ANS - Movement of occupant in that space
**1.1.0
Louvres are usually white or silvered are are made of metal or plastic strips in a vertical
orientation. If made in a ___ they can often replace diffusers or prismatic lenses, to give
better glare control and reduce eye strain - ANS - Small honeycomb or square pattern
**1.1.1
Semi direct lighting- ___ of the luminaries emitted light is down ward with a smaller
component (10%-40%) upward to illuminate the celling and upper walls - ANS -
60%-90%down and smaller 10%-40%up
**1.3.2
The classification of a given area as to class, division, and group is the responsibility of
the___ - ANS - Owner , insurance company or authority having jurisdiction
**3.2.0
A motion detector or sound detector may not be the right choice when - ANS -
occupants of the space sit very quietly at desks
**3.4.0
Daylight harvesting uses photo sensors to measure daylight and automatically ___ the
electric lighting when light levels are high - ANS - Dims or shuts off lighting
**3.4.0
Zone the work areas in large open spaces to allow the lighting in each zone to be
controlled ___ - ANS - Independently
1.1.2
***3.2.0
Ultra sonic sensors transmit ____ and receive a reflected signal to sense the movement
of occupants in a space - ANS - Ultrasound at a frequency between 25kHz and 40kHz
***3.2.0
Ultrasonic sensors detect __ - ANS - Movement of occupant in that space
**1.1.0
Louvres are usually white or silvered are are made of metal or plastic strips in a vertical
orientation. If made in a ___ they can often replace diffusers or prismatic lenses, to give
better glare control and reduce eye strain - ANS - Small honeycomb or square pattern
**1.1.1
Semi direct lighting- ___ of the luminaries emitted light is down ward with a smaller
component (10%-40%) upward to illuminate the celling and upper walls - ANS -
60%-90%down and smaller 10%-40%up
**1.3.2
The classification of a given area as to class, division, and group is the responsibility of
the___ - ANS - Owner , insurance company or authority having jurisdiction
**3.2.0
A motion detector or sound detector may not be the right choice when - ANS -
occupants of the space sit very quietly at desks
**3.4.0
Daylight harvesting uses photo sensors to measure daylight and automatically ___ the
electric lighting when light levels are high - ANS - Dims or shuts off lighting
**3.4.0
Zone the work areas in large open spaces to allow the lighting in each zone to be
controlled ___ - ANS - Independently
1.1.2
