F04 Fire Protection Systems 2

Question 1

What is the primary purpose of a fire suppression system's deluge valve?

Accepted Answer

To simultaneously open all sprinkler heads in a zone when activated

Answer

To reduce water pressure in the main supply line

Answer

To isolate a single sprinkler head that has been triggered

Answer

To control the flow of foam concentrate into the water supply

Question 2

Which type of fire suppression system is most appropriate for protecting a room containing electrical switchgear?

Accepted Answer

Clean agent gaseous suppression system

Answer

Wet-pipe sprinkler system

Answer

Dry-pipe sprinkler system

Answer

Foam-water sprinkler system

Question 3

A standpipe system classified as Class II is intended for use by:

Accepted Answer

Building occupants as a first-aid measure before firefighters arrive

Answer

Trained fire department personnel only

Answer

Automatic sprinkler systems as a primary water supply

Answer

Industrial fire brigades with full protective gear

Question 4

What happens to the air pressure in a dry-pipe sprinkler system when a sprinkler head fuses and opens?

Accepted Answer

Air pressure drops, allowing the dry-pipe valve to open and admit water

Answer

Air pressure increases due to heat expansion

Answer

Air pressure remains constant because the compressor compensates

Answer

Air pressure rises briefly then stabilizes as water enters

Question 5

In a pre-action sprinkler system, water enters the pipes only when:

Accepted Answer

A separate detection system activates AND a sprinkler head opens

Answer

Any sprinkler head reaches its rated temperature

Answer

The manual pull station is activated by a building occupant

Answer

Water pressure in the main supply exceeds a set threshold

Question 6

What is the function of a fire department connection (FDC) on a sprinkler system?

Accepted Answer

To allow firefighters to supplement the water supply to the sprinkler system

Answer

To drain residual water from the system after activation

Answer

To shut down the entire sprinkler system remotely from outside

Answer

To provide a sampling port for water quality testing

Question 7

Which NFPA standard governs the installation of sprinkler systems in most commercial buildings in the United States?

Accepted Answer

NFPA 13

Answer

NFPA 10

Answer

NFPA 72

Answer

NFPA 101