CTS – AV Industry Installation Professional
Exam
being generated by the source components - answers✔✔When checking signal flow, the first
thing you need to confirm is that the signal is _____.
direct connection - answers✔✔What type of connection is pictured below? (wire under screw)
gantt chart - answers✔✔What type of chart is displayed below? (activity/year/budget/actual)
Speech Reinforcement System - answers✔✔This type of audio system reinforces or amplifies a
presenter's voice so that they'll be heard over a larger audience.
the threshold of human hearing - answers✔✔0 dB SPL describes:
a logarithmic scale used to describe ratios with a large range of values - answers✔✔What is a
decibel?
Negative -1.8 dB - answers✔✔An audio amplifier outputs 75 watts and then it is decreased to
50 watts. What is the change in decibels?
40 dB - answers✔✔How loud (in decibels) does a 60 Hz sound have to be for it to be audible?
,70 dB - answers✔✔According to the equal loudness curve chart below, how loud does a 20 Hz
sound have to be before it is audible?
humans perceive different frequencies at a given listening level - answers✔✔"Weighting" a
sound pressure level measurement accounts for differences in the way _____.
65 - answers✔✔You measure the background noise level in a conference room at 40 dB SPL A-
wtd. What is the target sound pressure level of the audio system?
electrical energy - answers✔✔A sound wave must be transduced into _____ before it can be
transmitted through the audio signal path
change - answers✔✔Modern RF wireless microphones allow the user to _____ frequencies to
avoid interference.
using lavalier microphones - answers✔✔The simultaneous use of multiple wireless microphone
systems requires ____.
coil of wire - answers✔✔In a dynamic microphone, there is a(n) _____ attached to a diaphragm
and placed in a permanent magnetic field.
phantom - answers✔✔Operation of a condenser microphone requires ____ power.
remote power - answers✔✔Phantom power is the _____ required to power a condenser
microphone.
Prepolarized material - answers✔✔Which of the following best describes an electret, when
used in a microphone?
,Input impedance - answers✔✔_____ is not a necessary specification for a microphone.
microphone - answers✔✔A -58 dBu would be a typical signal level for a(n) _____.
The above shows a polar plot of a cardioid microphone; The response of this microphone at
2kHz is best on axis at 0 degrees. - answers✔✔Select all of the true statements about this
image: (2kHz cardiod polar plot)
Higher fidelity - answers✔✔Direct coupled sound systems are best for program audio because
of their _________.
coverage angle - answers✔✔A polar plot shows a loudspeaker's ____.
Identifying a device's directionality at a given frequency - answers✔✔Polar plot diagrams are
used for which purpose?
60 degrees - answers✔✔The polar plot below shows a loudspeaker's coverage pattern at 4 kHz.
What is this loudpspeaker's coverage angle?
resistance, if the current remains the same - answers✔✔An increase in voltage means an
increase in _____.
current; voltage - answers✔✔The ____ in an electrical circuit is proportional to the applied
____.
increases - answers✔✔As impedance increases and current remains constant, voltage _____.
5A - answers✔✔If the measured voltage in a circuit is 40 V, and the resistance is 8 ohms, what is
the current?
, resistance - answers✔✔The relationship between current and ____ is inversely proportional.
reduces - answers✔✔Resistance ____ the flow of current.
40 - answers✔✔If the measured current in a circuit is 5 A and the resistance is 8 ohms, what is
the voltage?
12 Ohms - answers✔✔If the measured current is 10 A and the voltage is 120 V, what is the
resistance in the circuit?
4.5 W - answers✔✔The current in a circuit is 0.5 A, and the voltage is measured at 9 V. What is
the power?
1 V - answers✔✔The current in a circuit is measured at 1 A, and the resistance is 1 ohm. What is
the voltage?
2 ohms - answers✔✔There are eight loudspeakers wired in parallel and each loudspeaker's
impedance is 16 ohms. The impedance of the circuit is _____ ohms.
2.7 ohms - answers✔✔There are four loudspeakers wired in parallel. Two of the loudspeakers
each have an impedance of 8 ohms. Two of the loudspeakers each have an impedance of 16
ohms. Calculate the impedance of this parallel circuit.
Polar plot picture - answers✔✔Which of the following is a polar plot diagram?
1800 W - answers✔✔Determine the wattage in a circuit measuring 120 volts with 15 amperes
of current flow.
Exam
being generated by the source components - answers✔✔When checking signal flow, the first
thing you need to confirm is that the signal is _____.
direct connection - answers✔✔What type of connection is pictured below? (wire under screw)
gantt chart - answers✔✔What type of chart is displayed below? (activity/year/budget/actual)
Speech Reinforcement System - answers✔✔This type of audio system reinforces or amplifies a
presenter's voice so that they'll be heard over a larger audience.
the threshold of human hearing - answers✔✔0 dB SPL describes:
a logarithmic scale used to describe ratios with a large range of values - answers✔✔What is a
decibel?
Negative -1.8 dB - answers✔✔An audio amplifier outputs 75 watts and then it is decreased to
50 watts. What is the change in decibels?
40 dB - answers✔✔How loud (in decibels) does a 60 Hz sound have to be for it to be audible?
,70 dB - answers✔✔According to the equal loudness curve chart below, how loud does a 20 Hz
sound have to be before it is audible?
humans perceive different frequencies at a given listening level - answers✔✔"Weighting" a
sound pressure level measurement accounts for differences in the way _____.
65 - answers✔✔You measure the background noise level in a conference room at 40 dB SPL A-
wtd. What is the target sound pressure level of the audio system?
electrical energy - answers✔✔A sound wave must be transduced into _____ before it can be
transmitted through the audio signal path
change - answers✔✔Modern RF wireless microphones allow the user to _____ frequencies to
avoid interference.
using lavalier microphones - answers✔✔The simultaneous use of multiple wireless microphone
systems requires ____.
coil of wire - answers✔✔In a dynamic microphone, there is a(n) _____ attached to a diaphragm
and placed in a permanent magnetic field.
phantom - answers✔✔Operation of a condenser microphone requires ____ power.
remote power - answers✔✔Phantom power is the _____ required to power a condenser
microphone.
Prepolarized material - answers✔✔Which of the following best describes an electret, when
used in a microphone?
,Input impedance - answers✔✔_____ is not a necessary specification for a microphone.
microphone - answers✔✔A -58 dBu would be a typical signal level for a(n) _____.
The above shows a polar plot of a cardioid microphone; The response of this microphone at
2kHz is best on axis at 0 degrees. - answers✔✔Select all of the true statements about this
image: (2kHz cardiod polar plot)
Higher fidelity - answers✔✔Direct coupled sound systems are best for program audio because
of their _________.
coverage angle - answers✔✔A polar plot shows a loudspeaker's ____.
Identifying a device's directionality at a given frequency - answers✔✔Polar plot diagrams are
used for which purpose?
60 degrees - answers✔✔The polar plot below shows a loudspeaker's coverage pattern at 4 kHz.
What is this loudpspeaker's coverage angle?
resistance, if the current remains the same - answers✔✔An increase in voltage means an
increase in _____.
current; voltage - answers✔✔The ____ in an electrical circuit is proportional to the applied
____.
increases - answers✔✔As impedance increases and current remains constant, voltage _____.
5A - answers✔✔If the measured voltage in a circuit is 40 V, and the resistance is 8 ohms, what is
the current?
, resistance - answers✔✔The relationship between current and ____ is inversely proportional.
reduces - answers✔✔Resistance ____ the flow of current.
40 - answers✔✔If the measured current in a circuit is 5 A and the resistance is 8 ohms, what is
the voltage?
12 Ohms - answers✔✔If the measured current is 10 A and the voltage is 120 V, what is the
resistance in the circuit?
4.5 W - answers✔✔The current in a circuit is 0.5 A, and the voltage is measured at 9 V. What is
the power?
1 V - answers✔✔The current in a circuit is measured at 1 A, and the resistance is 1 ohm. What is
the voltage?
2 ohms - answers✔✔There are eight loudspeakers wired in parallel and each loudspeaker's
impedance is 16 ohms. The impedance of the circuit is _____ ohms.
2.7 ohms - answers✔✔There are four loudspeakers wired in parallel. Two of the loudspeakers
each have an impedance of 8 ohms. Two of the loudspeakers each have an impedance of 16
ohms. Calculate the impedance of this parallel circuit.
Polar plot picture - answers✔✔Which of the following is a polar plot diagram?
1800 W - answers✔✔Determine the wattage in a circuit measuring 120 volts with 15 amperes
of current flow.
