FDNY Firefighting Operations and Equipment 4

Question 1

The FDNY '10-45' radio signal indicates:

Accepted Answer

Firefighter fatality or serious injury

Answer

A 10-45 in FDNY radio codes indicates a fatality or serious injury, prompting immediate supervisory response and notifications.

Question 2

When placing a ground ladder against a building for rescue, the proper climbing angle is approximately:

Accepted Answer

75 degrees

Answer

A 75-degree climbing angle (roughly one-quarter of the ladder's working length as the base distance) provides optimal strength and stability for climbing.

Question 3

Which FDNY unit is primarily responsible for forcible entry, search, and ventilation at a structural fire?

Accepted Answer

Ladder company

Answer

Ladder companies (truck companies) are responsible for forcible entry, search, rescue, ventilation, and overhaul, while engine companies handle water supply and hoselines.

Question 4

A 'Class A' foam is used to:

Accepted Answer

Enhance the extinguishing effectiveness of water on ordinary combustibles

Answer

Class A foam lowers water surface tension, allowing it to penetrate deeply into ordinary combustibles like wood and hay, improving knockdown and preventing rekindling.

Question 5

During positive pressure ventilation (PPV), the fan should be placed:

Accepted Answer

Outside the entry door at a distance matching the door opening

Answer

The PPV fan is positioned outside the entry door at a distance that creates a cone of air slightly larger than the door opening, pressurizing the entire structure.

(FDNY) Fire Department New York Practice Test

(FDNY) Fire Department New York Practice Test

FDNY Firefighting Operations and Equipment 4