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engineer exam > Pumping Apparatus > Flashcards

Pumping Apparatus Flashcards

1
Q

NFPA 1901 braking test requires that all new apparatus be brought to a complete stop from the speed of _______ in a distance not to exceed _____feet

A

20 mph

35 feet

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2
Q

The parking break should hold the apparatus and place on a grade of ______ percent

A

20%

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3
Q

NFPA standard requires all apparatus equipped with airbrakes to build sufficient level to allow vehicle to operate within _____ seconds

A

60

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4
Q

The airhorn will not operate when air pressure drops below ____psi

A

80

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5
Q

In general steering wheel play should be no more than _____degrees in either direction

A

10

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6
Q

When more than one emergency vehicles responded along the same route unit should travel at least ______ to______feet apart

A

300 to 500

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7
Q

The collapse zone of the building should be equal to

A

The height of the building

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8
Q

A measure of heat absorbing capacity of a substance

A

Specific heat

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9
Q

The primary way water extinguishers fire is by ______or ________heat from the fire

A

Cooling or absorbing

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10
Q

The amount of heat required to raise the temperature of 1 pound of water 1°F

A

Btu

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11
Q

The quantity of heat absorbed by a substance when it changes from a liquid to a vapor

A

Latent heat of vaporization

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12
Q

The temperature at which a liquid absorbs enough heat to change to vapor is known as

A

Boiling point

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13
Q

The density of the liquid in relation to water is known

A

Specific gravity

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14
Q

The weight of one cubic foot of water is approximately

A

62.5 pounds

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15
Q

One square inch column of water 1 foot high exerts a pressure at its base of

A

.434 psi

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16
Q

At sea level atmospheric pressure exerts a pressure of

A

14.7 psi

17
Q

The heights of water supply above the discharge orifice

A

Head pressure

18
Q

Stored potential energy available to force water through pipe fittings firehouse and adapters

A

Static pressure

19
Q

The pressure found in a water distribution system during normal consumption demands

A

Normal operating pressure

20
Q

The total available pressured not used to overcome friction loss or gravity of forcing water through the pipes, fittings, firehose, and adapters

A

Residual pressure

21
Q

Above sea level, atmospheric pressure decreases approximately ______psi for every thousand feet

A

.5 PSI

22
Q

Suddenly stopping water moving through a hose or pipe results in an energy surge been transmitted in the opposite direction, often at many times the original pressure

A

Water hammer

23
Q

Three methods of moving water in the system are

A

Direct pumping systems
Gravity systems
Combination systems

24
Q

System uses one or more pumps to take water from the primary source and discharge it through the filtration and treatment process

A

Direct pumping system

25
Q

Water system using a primary water source located at a higher elevation than the distribution system

A

Gravity system

26
Q

A fire hydrant that receives water from only One Direction is known as

A

A dead-end hydrant

27
Q

Hydrant that received order from two or more directions and said to have a circulating feed or a

A

Looped in line

28
Q

The grid system consists of the following components

A

Primary feeders
Secondary feeders
Distributors

29
Q

Large pipes with relatively widespread spacing that convey large quantities of water to various points of the system for local distribution to smaller mains usually 16 inch pipe

A

Primary feeders

30
Q

Network of intermediate size pipes that reinforce the grid within the various loops of the primary feeder system in aid in the concentration of the required fire flow at any point and are 12 inch pipes

A

Secondary feeders

31
Q

Grid arrangement of smaller means serve an individual fire hydrants and blocks of consumers 8 inch pipes

A

Distributors

32
Q

In residential areas, the recommended size for the fire hydrant supply main is at least _____ inches

A

6

33
Q

In business and industrial districts, the minimum recommended sizes _____ inches

A

8

34
Q

_____ inch mains should be used On principal streets and in long mains not cross connected at frequent intervals

A

12

35
Q

Valves and private fire protection systems are usually two types of indicating valves

A

Post indicating valves PIV

Outside screw and yolk valves OS&Y

36
Q

The valve stem inside the post indicating valve has the words ________ and _________printed on it but the position of the valve is shown

A

Open and shut

37
Q

The most common type of valve used on most public water distribution systems is

A

Non-indicating valves

engineer exam (13 decks)

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