Deck 61: Audio System Operation and Diagnosis

Question 1

The voice recognition system microphone is usually located near the glove box door.

Answer 1

False

Question 2

The satellite radio antenna can be mounted on a fiberglass or composite spoiler.

Answer 2

False

Question 3

Speaker polarity can be tested using a small battery.

Answer 3

True

Question 4

A Bluetooth signal can typically travel ________.

A)33 feet
B)10 meters
C)10 feet
D)Both A and B

Question 5

To safely install a power amplifier in-line capacitor, it must first be ________.

A)Discharged
B)Precharged
C)Uncharged
D)Grounded

Question 6

These speakers have a combined impedance of ________.

A)8 ohms
B)12 ohms
C)16 ohms
D)2 ohms

Question 7

Which of these tools is used to test for a reading of infinity between the center antenna lead and the antenna?

A)Voltmeter
B)Ohmmeter
C)Powered test light
D)Test light

Question 8

100,000 ?F means ________.

A)0.10 farad
B)0.0001 farad
C)0.01 farad
D)0.001 farad

Question 9

A bolt of lightning generates broad radio frequency bandwidths known as ________.

A)Frequency Modulation (FM)
B)Radio Frequency Interference (RFI)
C)Electromagnetic Interference (EMI)
D)Both B and C

Question 10

More than one signal can be carried by a radio wave using a process called ________.

A)Frontband operation
B)Sideband operation
C)Amplitude Modulation
D)Frequency Modulation

Question 11

Technician A says that radios receive AM and FM signals that are broadcast through the air. Technician B says that the radio antenna is used to induce a very large voltage signal as an input into the radio from the electromagnetic energy from the broadcast station. Who is right?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 12

Technician A says that FM requires an antenna whereas AM may be heard from a radio without an antenna. Technician B says that speakers reproduce the original sound and their impedance should be matched. Who is right?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 13

Technician A says that crossovers are used to block certain frequencies to allow each type of speaker to perform its job better. Technician B says that a high-pass filter is used to block high-frequency sounds being sent to large woofer speakers, and a low-pass filter blocks low-frequency sounds being sent to tweeters. Who is right?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 14

All of these can cause radio interference, EXCEPT ________.

A)Fault in the ignition system
B)Defective alternator
C)Loose ground wire
D)Open in the radio power circuit

Question 15

A ________ is the time and distance between two consecutive points, either high or low.

A)Wavelength
B)Period
C)Frequency
D)Amplitude

Question 16

The number of times a particular waveform repeats itself in a given amount of time (frequency) is measured in ________.

A)Watts
B)Ersteads
C)Coulombs
D)Hertz

Question 17

Which of these is a term used to describe when information is added to a constant frequency?

A)Period
B)Frequency
C)Modulation
D)Carrier wave