RCDD TOPIC 15 - TOPIC 21
,RCDD 110 Terms in this set
RCDD TOPIC 15 - TOPIC 21 Questions & Answers
Latest Update 100% Solved.
What is the recommended distance between ceiling mounted speakers in a hallway with
heavy traffic?
A. 2.4 m (8 ft)
B. 3.7 m (12 ft)
C. 4.9 m (16 ft)
D. 6 m (20 ft) - ✔✔✔-A. 2.4 m (8 ft)
A space has all hard surfaces including architecture and furnishings. The audio
programming produced from the distributed sound system has become unintelligible.
Which of the following will NOT mitigate the problem?
A. Add tapestries to the walls.
B. Provide additional speakers at lower output.
C. Increase the volume to the existing speakers.
D. Reduce the distance of the existing speakers to the listener. - ✔✔✔-C. Increase the
volume to the existing speakers.
What are the three typical voltages used in centrally amplified paging systems?
A. 24, 48, and 90
B. 25, 70, and 100
C. 25, 90, and 120
®™
,RCDD 110 Terms in this set
D. 48, 90, and 120 - ✔✔✔-B. 25, 70, and 100
Using the sound pressure level (SPL) method of approximating distance and power,
calculate the power required to produce 89 dB at 4 m (13.1 ft) with a loud speaker that
is rated at a SPL of 95 dB. What input power level (in watts) is required to appropriately
power the speaker?
A. 1 watt
B. 2 watts
C. 4 watts
D. 8 watts - ✔✔✔-C. 4 watts
You are designing a paging system for a 588 sq m (6325 sq ft) open office space. Due to
architectural features of the ceiling, wall mounted speakers must be used. Following the
general rule about wall mounted speaker placement, how many speakers should be
installed?
A. Eight
B. Ten
C. Twelve
D. Fourteen - ✔✔✔-C. Twelve
What is the highest typical ambient noise level where audio paging becomes
unintelligible?
A. 75 dB
®™
, RCDD 110 Terms in this set
B. 85 dB
C. 95 dB
D. 105 dB - ✔✔✔-C. 95 dB
What element is typically NOT part of a paging system?
A. Strobe
B. Distribution
C. Amplification
D. Loudspeakers - ✔✔✔-A. Strobe
You are designing a four story retail mall and multiple sound systems within it. Which
system should you design to support general music programming within common retail
areas?
A. Distributed paging
B. Life safety
C. Sound masking
D. Sound reinforcement and playback - ✔✔✔-D. Sound reinforcement and playback
A properly designed distributed paging system will provide a sound pressure level (SPL)
for audio paging that is between ________ above ambient noise level.
A. 3 dB and 6 dB
B. 6 dB and 10 dB
®™
,RCDD 110 Terms in this set
RCDD TOPIC 15 - TOPIC 21 Questions & Answers
Latest Update 100% Solved.
What is the recommended distance between ceiling mounted speakers in a hallway with
heavy traffic?
A. 2.4 m (8 ft)
B. 3.7 m (12 ft)
C. 4.9 m (16 ft)
D. 6 m (20 ft) - ✔✔✔-A. 2.4 m (8 ft)
A space has all hard surfaces including architecture and furnishings. The audio
programming produced from the distributed sound system has become unintelligible.
Which of the following will NOT mitigate the problem?
A. Add tapestries to the walls.
B. Provide additional speakers at lower output.
C. Increase the volume to the existing speakers.
D. Reduce the distance of the existing speakers to the listener. - ✔✔✔-C. Increase the
volume to the existing speakers.
What are the three typical voltages used in centrally amplified paging systems?
A. 24, 48, and 90
B. 25, 70, and 100
C. 25, 90, and 120
®™
,RCDD 110 Terms in this set
D. 48, 90, and 120 - ✔✔✔-B. 25, 70, and 100
Using the sound pressure level (SPL) method of approximating distance and power,
calculate the power required to produce 89 dB at 4 m (13.1 ft) with a loud speaker that
is rated at a SPL of 95 dB. What input power level (in watts) is required to appropriately
power the speaker?
A. 1 watt
B. 2 watts
C. 4 watts
D. 8 watts - ✔✔✔-C. 4 watts
You are designing a paging system for a 588 sq m (6325 sq ft) open office space. Due to
architectural features of the ceiling, wall mounted speakers must be used. Following the
general rule about wall mounted speaker placement, how many speakers should be
installed?
A. Eight
B. Ten
C. Twelve
D. Fourteen - ✔✔✔-C. Twelve
What is the highest typical ambient noise level where audio paging becomes
unintelligible?
A. 75 dB
®™
, RCDD 110 Terms in this set
B. 85 dB
C. 95 dB
D. 105 dB - ✔✔✔-C. 95 dB
What element is typically NOT part of a paging system?
A. Strobe
B. Distribution
C. Amplification
D. Loudspeakers - ✔✔✔-A. Strobe
You are designing a four story retail mall and multiple sound systems within it. Which
system should you design to support general music programming within common retail
areas?
A. Distributed paging
B. Life safety
C. Sound masking
D. Sound reinforcement and playback - ✔✔✔-D. Sound reinforcement and playback
A properly designed distributed paging system will provide a sound pressure level (SPL)
for audio paging that is between ________ above ambient noise level.
A. 3 dB and 6 dB
B. 6 dB and 10 dB
®™
