CAT Knowledge and Skills 2

Question 1

Which wire gauge is most commonly used for connecting alarm system sensors to a control panel over short distances?

Accepted Answer

22 AWG

Answer

14 AWG

Answer

10 AWG

Answer

6 AWG

Question 2

What is the purpose of an End-of-Line (EOL) resistor in a supervised alarm circuit?

Accepted Answer

To indicate a tamper or cut wire condition to the panel

Answer

To limit current through the siren

Answer

To prevent voltage spikes from lightning

Answer

To balance speaker impedance

Question 3

A passive infrared (PIR) motion detector primarily detects changes in what physical property?

Accepted Answer

Infrared radiation emitted by moving warm bodies

Answer

Ultrasonic reflections from moving objects

Answer

Visible light interruptions across a beam

Answer

Microwave Doppler frequency shifts

Question 4

What NEC article primarily governs the installation of fire alarm systems?

Accepted Answer

Article 760

Answer

Article 800

Answer

Article 725

Answer

Article 310

Question 5

When testing a heat detector's fixed-temperature rating, which tool is the safest and most recommended method?

Accepted Answer

A listed heat detector test instrument (heat gun)

Answer

An open flame lighter held beneath the detector

Answer

A standard hair dryer at maximum heat

Answer

Boiling water poured over the detector

Question 6

Which battery type is most commonly used as the standby power source in residential alarm control panels?

Accepted Answer

Sealed lead-acid (SLA)

Answer

Lithium primary

Answer

Alkaline AA cells

Answer

Nickel-cadmium (NiCd)

Question 7

A technician notices a 'low battery' trouble signal on a wireless smoke detector. What is the correct action?

Accepted Answer

Replace the battery with the manufacturer-specified type and test the device

Answer

Ignore it until the detector triggers an alarm

Answer

Reset the panel remotely and monitor for 24 hours

Answer

Replace the entire detector immediately