ch 15 teat quiz Flashcards
The most likely cause of leaking between two joined couplings is a damaged or missing:
swivel gasket
Which is the function of lugs found on couplings?
Aid in coupling and uncoupling hose
What is hard suction hose most commonly used for?
Drafting from a static water source
Which appliance is used to connect hose couplings with dissimilar threads?
Adaptor
In double-jacket fire hose, which is the function of the outer jacket?
It is a protective covering
Which threadless coupling is commonly used on large diameter hose?
Storz
Which is the best description of a hose jacket device?
Split metal cylinder
Which type of valve is opened or closed by rotating a handle a quarter turn?
Butterfly
Which coupling goes on the inside of a straight hose roll?
Male
Which is a function of a hose liner?
Reduce friction loss
The two-fire-fighter stiff-arm method is used to:
uncouple hose
Which is the correct tool to tighten a hard suction hose connection?
Rubber mallet
Which device splits one hose stream into two hose streams?
Wye
How does a doughnut hose roll differ from a straight hose roll?
Both couplings are on the outside
Which type of valve is typically used on engine discharges?
Ball
The most likely cause of leaking between two joined couplings is a damaged or missing:
swivel gasket
What is the purpose of the Higbee indicator?
Make hose coupling easier and faster
Which is the function of lugs found on couplings?
Aid in coupling and uncoupling hose
What should be done to avoid water hammer?
Open and close all valves slowly
What is hard suction hose most commonly used for?
Drafting from a static water source
Which appliance is used to connect hose couplings with dissimilar threads?
Adaptor
When referring to hose, what does the “L” stand for in “LDH”?
Large
In double-jacket fire hose, which is the function of the outer jacket?
It is a protective covering.
Which threadless coupling is commonly used on large diameter hose?
Storz
Which item is used to attach a smaller hose to a larger one?
Reducer
Which is the best description of a hose jacket device?
Split metal cylinder
Which type of valve is opened or closed by rotating a handle a quarter turn?
Butterfly
Which coupling goes on the inside of a straight hose roll?
Male
Which is used to carry a self-locking twin-doughnut hose roll?
A loop of hose
Which is a function of a hose liner?
Reduce friction loss
Which type of wrench is used to tighten and loosen couplings?
Spanner
The two-fire-fighter stiff-arm method is used to:
uncouple hose.
The NFPA recommends that a pumper carry a minimum of _____ of supply hose.
800 ft (242 m)
Which is the correct tool to tighten a hard suction hose connection?
Rubber mallet
Which device splits one hose stream into two hose streams?
Wye
Which hose appliance combines two hose lines into one?
Siamese
Which is a common use for a hose clamp?
Allow a hydrant to be opened before the supply line is connected to the pump intake
How does a doughnut hose roll differ from a straight hose roll?
Both couplings are on the outside.
Which is the last step in rolling a straight hose roll?
Use your foot to align protruding hose.
Hose that is at least 3½” (88 mm) in diameter is considered __________ diameter.
large
During annual testing, supply hose is tested at:
200 psi (1379 kPa).
The function of which item is to connect individual lengths of hose together?
Coupling
Which type of valve is typically used on engine discharges?
Ball
A soft sleeve hose is used to connect a pumper to a:
hydrant.
Which NFPA standard covers fire hose testing?
1962
What should be used to clean dirty fire hose?
Mild detergent
Which type of adaptor is used to connect two female couplings to each other?
Double male
Which item is required to be noted on the hose record?
Test date
What makes a water thief different from a wye is the addition of:
a 2½” (65-mm) outlet.
Which tool is used to protect a hose line that is being hoisted over a sharp edge?
Hose roller
Which type of hose roll is used to store hose on a storage rack?
Straight
During annual testing, attack hose is tested at what pressure?
300 psi (2068 kPa)
Generally speaking, a 1½” (38-mm) attack hose can flow:
60 to 125 gpm (227 to 473 lpm).
Generally speaking, a 1¾” (44-mm) attack hose can flow:
120 to 180 gpm (454 to 681 lpm).
Generally speaking, a 1” (25-cm) booster hose can flow:
40 to 50 gpm (151 to 189 lpm).
Which is an appropriate use for a 1” (25-mm) booster line?
Dumpster fire
Hard rubber hose stored on a hose reel is __________ hose.
booster
Which hose diameter is used as both supply line and attack handline?
2½” (65 mm)
In general, what volume does a 2½” (65-mm) handline flow?
250 gpm (946 lpm)
A 50’ (15 m) section of charged 2½” (65-mm) hose weighs approximately:
140 lb (64 kg).
Master streams flow a minimum of:
350 gpm (1325 lpm).
Which nozzle type has the highest flow rate?
Master stream
Which is an advantage of a smooth-bore nozzle?
Longer stream reach
Most smooth-bore nozzles are designed to operate at which pressure?
50 psi (345 kPa)
Compared to fog nozzle streams, smooth-bore nozzle streams:
absorb less heat.
Which is an advantage of an automatic-adjusting fog nozzle?
The rate of flow adjusts to maintain the rated nozzle pressure.
Traditionally, most fog nozzles were designed to operate at which nozzle pressure?
100 psi (690 kPa)
Which type of nozzle is used to fight fires in inaccessible places such as attics and basements?
Cellar
Hose on an apparatus that has not been used should be unloaded, inspected, and reloaded every:
30 days.
