S95 Supervisory and Trouble Signals 2

Question 1

A supervisory signal is received at the fire alarm control panel indicating a valve has moved from its normal position. What is the FIRST action required?

Accepted Answer

Investigate and restore the valve to its normal position

Answer

Supervisory signals indicate off-normal conditions that must be investigated and corrected by restoring the device to its normal supervised position.

Question 2

Which of the following conditions would generate a TROUBLE signal rather than a supervisory signal?

Accepted Answer

A ground fault on a signaling line circuit

Answer

A ground fault on a signaling line circuit indicates a wiring or circuit integrity problem, which is classified as a trouble condition.

Question 3

According to NFPA 72, how often must supervisory signals be tested in a system with central station monitoring?

Accepted Answer

Annually

Answer

NFPA 72 requires supervisory signal devices to be tested annually unless the authority having jurisdiction specifies a different frequency.

Question 4

A building fire alarm system displays a trouble signal with an 'open circuit' fault on initiating device circuit 3. What does this indicate?

Accepted Answer

A wire break or disconnection exists on circuit 3

Answer

An open circuit trouble indicates a wire break, loose connection, or disconnected device that has interrupted the circuit continuity.

Question 5

Which signal type is generated when a sprinkler control valve is closed more than 20% from the fully open position?

Accepted Answer

Supervisory signal

Answer

A tamper switch on a sprinkler control valve generates a supervisory signal when the valve moves significantly from its fully open (normal) position.

(S95) Supervision of Fire Alarm System Practice Test

(S95) Supervision of Fire Alarm System Practice Test

S95 Supervisory and Trouble Signals 2