CAT Technical Skills 2

Question 1

What is the primary purpose of a high-pass filter (HPF) in a commercial audio system?

Accepted Answer

Remove frequencies below a set point

Answer

Boost high frequencies

Answer

Increase overall gain

Answer

Add harmonic distortion

Question 2

In a balanced audio connection, which pin carries the negative (cold) signal in an XLR connector?

Accepted Answer

Pin 3

Answer

Pin 1

Answer

Pin 2

Answer

Pin 4

Question 3

What does 'SPL' stand for in commercial audio?

Accepted Answer

Sound Pressure Level

Answer

Signal Processing Level

Answer

Speaker Power Load

Answer

System Peak Limit

Question 4

Which type of microphone uses an externally applied voltage (phantom power) to polarize its capsule?

Accepted Answer

Condenser microphone

Answer

Dynamic microphone

Answer

Ribbon microphone

Answer

Piezoelectric microphone

Question 5

What is the standard impedance for professional audio line-level signals?

Accepted Answer

600 ohms

Answer

8 ohms

Answer

75 ohms

Answer

10,000 ohms

Question 6

A technician measures a signal with 10 times the voltage of another signal. What is the dB difference?

Accepted Answer

20 dB

Answer

10 dB

Answer

40 dB

Answer

100 dB

Question 7

Which cable type is most appropriate for high-frequency digital audio signals in a commercial install to minimize interference?

Accepted Answer

Shielded twisted pair (STP)

Answer

Unshielded twisted pair (UTP)

Answer

Coaxial cable

Answer

Multi-conductor unshielded cable