Question 1

A condenser microphone requires the use of an external power source to operate.

Accepted Answer

A) True 
 B)False  True

Question 2

According to the National Electrical Code, audio circuits do not have any conduit fill restrictions.

Accepted Answer

A) True 
 B)False  False

Question 3

Match between columns
                        Premises: ________ Signals approaching from the rear, at 180 degrees, are reduced by as much as 25 dB

Accepted Answer

The Answer of Super-cardioid and Bi-directional and Omni-directional and Shotgun is...

Question 4

Match between columns
                        Premises: ________ Sensitive to sounds in a 360 S1U1P1 ◦ S1S1P0 pattern

Accepted Answer

The Answer of Super-cardioid and Hyper-cardioid and Omni-directional and Uni-directional is...

Question 5

A 70V audiotransformer tapped at 10W will output _________ voltage at the 8 Ω load. (assume the transformer has no loss).

Accepted Answer

To determine the output voltage of a 70V

Question 6

An external power source for condenser microphones is called ________.

Accepted Answer

A)  A Battery 
B)  A generator 
C)  Phantom Power 
D)  A Mixer 
A)  A Battery 
B)  A generator 
C)  Phantom Power 
D)  A Mixer

Question 7

Calculate the decibel level of a 400µV microphone signal. (Assume a 1mW reference and 150 Ω impedance).

Accepted Answer

To calculate the decibel level of a 400µ

Question 8

Match between columns
                        Premises: ________ Sensitive to sounds originating from the front and rear

Accepted Answer

The Answer of Super-cardioid and Hyper-cardioid and Shotgun and Cardioid is...

Question 9

A subwoofer should be pointed directly at the subject to hear the low frequency audio clearly.

Accepted Answer

A) True 
 B)False

Question 10

What type of speaker cone is typically less than 2" in diameter and more often resemble a flat diaphragm rather than a cone?

Accepted Answer

A)  Woofer 
B)  Mid-range 
C)  Horn 
D)  Tweeter 
A)  Woofer 
B)  Mid-range 
C)  Horn 
D)  Tweeter

Question 11

Calculate the amplifier power requirements when a load consists of ten 1W transformers, five 5W transformers and three 10W transformers.

Accepted Answer

To calculate the amplifier power require

Question 12

Wireless microphones operate using infrared technology between the amplifier and the microphone.

Accepted Answer

A) True 
 B)False

Question 13

Match between columns
                        Premises: ________ Combine the effects of differing polar patterns

Accepted Answer

The Answer of Shotgun and Uni-directional and Super-cardioid and Omni-directional is...

Question 14

An audio signal that has priority over all other signals is said to have precedence.

Accepted Answer

A) True 
 B)False

Question 15

What type of audio device is used to separate and direct a complex mixture of audio frequencies to their required sized loads?

Accepted Answer

A)  A Crossover 
B)  A Filter 
C)  A Mixer 
D)  A Microphone 
A)  A Crossover 
B)  A Filter 
C)  A Mixer 
D)  A Microphone

Question 16

The purpose of using bells or tones in a PA system is _______.

Accepted Answer

A)  To assure that the telephone system is tied into the main audio circuit 
B)  To use them as the alert for the fire alarm system 
C)  To help get the attention of the audience before a message is conveyed 
D)  To be able to play music for the entire building 
A)  To assure that the telephone system is tied into the main audio circuit 
B)  To use them as the alert for the fire alarm system 
C)  To help get the attention of the audience before a message is conveyed 
D)  To be able to play music for the entire building

Question 17

If a sound source were moved against a wall and the sphere of radiation were bisected, the measured sound pressure level would double.

Accepted Answer

A) True 
 B)False

Question 18

A balanced line is one that uses two circuit conductors having equal impedance from either side to ground.

Accepted Answer

A) True 
 B)False

Question 19

According to the National Electrical Code, how far must audio equipment supplied by a branch-circuit be installed from the inside wall of the body of water?

Accepted Answer

A)  Not less than 12 inches 
B)  3ft. 
C)  5ft. 
D)  8ft. 
A)  Not less than 12 inches 
B)  3ft. 
C)  5ft. 
D)  8ft.

Question 20

According to the National Electrical Code, audio circuit wiring can be placed directly on suspended ceiling tiles.

Accepted Answer

A) True 
 B)False

A condenser microphone requires the use of an external power source to operate.

According to the National Electrical Code, audio circuits do not have any conduit fill restrictions.

A 70V audiotransformer tapped at 10W will output _________ voltage at the 8 Ω load. (assume the transformer has no loss).

An external power source for condenser microphones is called ________.

Calculate the decibel level of a 400µV microphone signal. (Assume a 1mW reference and 150 Ω impedance).

A subwoofer should be pointed directly at the subject to hear the low frequency audio clearly.

What type of speaker cone is typically less than 2" in diameter and more often resemble a flat diaphragm rather than a cone?

Calculate the amplifier power requirements when a load consists of ten 1W transformers, five 5W transformers and three 10W transformers.

Wireless microphones operate using infrared technology between the amplifier and the microphone.

An audio signal that has priority over all other signals is said to have precedence.

What type of audio device is used to separate and direct a complex mixture of audio frequencies to their required sized loads?

The purpose of using bells or tones in a PA system is _______.

If a sound source were moved against a wall and the sphere of radiation were bisected, the measured sound pressure level would double.

A balanced line is one that uses two circuit conductors having equal impedance from either side to ground.

According to the National Electrical Code, how far must audio equipment supplied by a branch-circuit be installed from the inside wall of the body of water?

According to the National Electrical Code, audio circuit wiring can be placed directly on suspended ceiling tiles.

Introduction to the National Electrical Code

Electrical Conductors and Cable

Grounding and Bonding and the 2011 National Electrical Code, Articles 250, 800, 810, and 820

Audio Physics

Networking and Information Technology Equipment

Power Supplies, Batteries, and Emergency Systems

Article 725 of the National Electrical Code; Classification of Circuits

Fire Alarm Systems and National Electrical Code Article 760

Fiber-Optic Cable and National Electrical Code Article 770

Telecommunications, and National Electrical Code Article 800

Security and Card Access System Basics

Wireless Communications and National Electrical Code Article 810

Close Circuit Television Camera Systems and National Electrical Code Article 820

Filters

Exam 5: Audio Signal-Processing, Amplification, and Reproduction Equipment and National Electrical Code Article 640

A condenser microphone requires the use of an external power source to operate.

According to the National Electrical Code, audio circuits do not have any conduit fill restrictions.

A 70V audiotransformer tapped at 10W will output _________ voltage at the 8 Ω load. (assume the transformer has no loss).

An external power source for condenser microphones is called ________.

Calculate the decibel level of a 400µV microphone signal. (Assume a 1mW reference and 150 Ω impedance).

A subwoofer should be pointed directly at the subject to hear the low frequency audio clearly.

What type of speaker cone is typically less than 2" in diameter and more often resemble a flat diaphragm rather than a cone?

Calculate the amplifier power requirements when a load consists of ten 1W transformers, five 5W transformers and three 10W transformers.

Wireless microphones operate using infrared technology between the amplifier and the microphone.

An audio signal that has priority over all other signals is said to have precedence.

What type of audio device is used to separate and direct a complex mixture of audio frequencies to their required sized loads?

The purpose of using bells or tones in a PA system is _______.

If a sound source were moved against a wall and the sphere of radiation were bisected, the measured sound pressure level would double.

A balanced line is one that uses two circuit conductors having equal impedance from either side to ground.

According to the National Electrical Code, how far must audio equipment supplied by a branch-circuit be installed from the inside wall of the body of water?

According to the National Electrical Code, audio circuit wiring can be placed directly on suspended ceiling tiles.

Introduction to the National Electrical Code

Electrical Conductors and Cable

Grounding and Bonding and the 2011 National Electrical Code, Articles 250, 800, 810, and 820

Audio Physics

Networking and Information Technology Equipment

Power Supplies, Batteries, and Emergency Systems

Article 725 of the National Electrical Code; Classification of Circuits

Fire Alarm Systems and National Electrical Code Article 760

Fiber-Optic Cable and National Electrical Code Article 770

Telecommunications, and National Electrical Code Article 800

Security and Card Access System Basics

Wireless Communications and National Electrical Code Article 810

Close Circuit Television Camera Systems and National Electrical Code Article 820

Filters