VDV Audio/Video Systems Installation 3

Question 1

What does the term 'impedance bridging' mean in the context of connecting audio equipment?

Accepted Answer

The source impedance is much lower than the load impedance

Answer

Impedance bridging means the source (output) impedance is significantly lower than the load (input) impedance, maximizing voltage transfer between devices.

Question 2

When installing a distributed audio system using a 70V amplifier and speakers, what must be checked before connecting speakers in parallel?

Accepted Answer

That the total wattage of all taps does not exceed the amplifier's rated output

Answer

In a 70V system, the sum of all speaker tap wattages must not exceed the amplifier's total rated power to prevent overload and distortion.

Question 3

Which connector type is used to terminate analog component video cables (YPbPr)?

Accepted Answer

RCA

Answer

Analog component video (YPbPr) uses three RCA connectors, typically color-coded green, blue, and red.

Question 4

A technician needs to install a video display at a 15-degree tilt on a concrete wall. Which wall mount type should be selected?

Accepted Answer

Tilting wall mount

Answer

A tilting wall mount allows the display to be angled downward for optimal viewing, which is important when mounting above typical eye level.

Question 5

What is the primary function of a signal splitter in a video distribution system?

Accepted Answer

To distribute one source signal to multiple displays simultaneously

Answer

A signal splitter takes one source input and distributes it to multiple outputs so the same content appears on several displays at once.

(VDV) Voice Data Video Technician Certified Practice Test

(VDV) Voice Data Video Technician Certified Practice Test

VDV Audio/Video Systems Installation 3