Driver Operator Study Questions and simlified answers
8.35 pounds -ANSWER.How much does 1 gallon of water weigh?
231 cubic inches -ANSWER.How many cubic inches does 1 gallon of water contain?
62.5 pounds -ANSWER.How many pounds does 1 cubic foot of water weigh?
7.481 gallons -ANSWER.How many gallons of water does 1 cubic foot contain?
1,728 cubic inches -ANSWER.How many cubic inches are there in 1 cubic foot?
.434 psi -ANSWER.A 1 foot high column of water exerts how much psi at it's base?
2.304 feet -ANSWER.How many feet will 1 psi of pressure raise a column of water?
13.55 inches -ANSWER.1 inch of mercury is equal to how many inches of water?
HG -ANSWER.What is the symbol for inches of mercury?
14.7 feet -ANSWER.How many feet is dependable lift?
33.87 feet -ANSWER.How many feet is theoretical lift?
By performing routine maintenance checks on a regular basis. -ANSWER.How can most
apparatus or equipment failures be prevented?
No -ANSWER.Is exercising the volume-series control lever part of the daily apparatus
inspection?
1 inch -ANSWER.Apparatus with water tanks of 1000 gallons or less must have a tank fill
line of at least how many inches?
2 inches -ANSWER.Apparatus with water tanks more than 1000 gallons must have a tank
fill line of how many inches?
NFPA 1901 -ANSWER.What NFPA is the standard for automotive fire apparatus?
NFPA 11C
NFPA 1901 -ANSWER.Industrial foam pumpers are built according to what NFPA numbers?
50-75 feet -ANSWER.At what height do elevating water devices typically range?
The source pumper -ANSWER.During relay pumping, which pumper should be the largest
capacity pumper?
The scene pumper -ANSWER.Relay pumping evolutions should be shut down at what
pumper first?
, 10 feet of lift
20 feet of hard suction -ANSWER.Pumper capacities are set at draft with how many feet of
lift? And through how many feet of hard suction?
150 psi -ANSWER.Pumpers should flow how many psi at 100% capacity?
200 psi -ANSWER.Pumpers should flow how many psi at 70% capacity?
250 psi -ANSWER.Pumpers should flow how many psi at 50% capacity?
Back pressure -ANSWER.Head pressure equals?
Acceptance test -ANSWER.What is the test performed at the factory or after delivery to
assure the purchaser that the apparatus meets BID specifications?
True -ANSWER.Pressure supplied to a hose should not exceed that at which it is annually
tested. True or False?
300 gpm -ANSWER.Master streams have flows of over how many gpm?
True -ANSWER.On a standpipe system, firefighters should disconnect house lines and use
their own hoses. True or False?
200 psi -ANSWER.The maximum allowable pressure for a relay is how many psi?
0 psi -ANSWER.What is the friction loss for appliances with flows of less than 350 psi?
10 psi -ANSWER.What is the friction loss for appliances with flows of more than 350 psi?
True -ANSWER.There is no "positive mechanical blockage" between the intake and
discharge sides of a centrifugal pump. True or False?
An air leak
or
Air in the pump -ANSWER.What is the most common reason for loss of prime?
1,500 gallons -ANSWER.What is the maximum tank capacity, in gallons, for a single rear
axle fire unit?
Incoming pressure -ANSWER.A centrifugal pump takes advantage of what type of
pressure?
L x W x H= V (volume) -ANSWER.What is the Formula for finding the volume of a square or
rectangle?
8.35 pounds -ANSWER.How much does 1 gallon of water weigh?
231 cubic inches -ANSWER.How many cubic inches does 1 gallon of water contain?
62.5 pounds -ANSWER.How many pounds does 1 cubic foot of water weigh?
7.481 gallons -ANSWER.How many gallons of water does 1 cubic foot contain?
1,728 cubic inches -ANSWER.How many cubic inches are there in 1 cubic foot?
.434 psi -ANSWER.A 1 foot high column of water exerts how much psi at it's base?
2.304 feet -ANSWER.How many feet will 1 psi of pressure raise a column of water?
13.55 inches -ANSWER.1 inch of mercury is equal to how many inches of water?
HG -ANSWER.What is the symbol for inches of mercury?
14.7 feet -ANSWER.How many feet is dependable lift?
33.87 feet -ANSWER.How many feet is theoretical lift?
By performing routine maintenance checks on a regular basis. -ANSWER.How can most
apparatus or equipment failures be prevented?
No -ANSWER.Is exercising the volume-series control lever part of the daily apparatus
inspection?
1 inch -ANSWER.Apparatus with water tanks of 1000 gallons or less must have a tank fill
line of at least how many inches?
2 inches -ANSWER.Apparatus with water tanks more than 1000 gallons must have a tank
fill line of how many inches?
NFPA 1901 -ANSWER.What NFPA is the standard for automotive fire apparatus?
NFPA 11C
NFPA 1901 -ANSWER.Industrial foam pumpers are built according to what NFPA numbers?
50-75 feet -ANSWER.At what height do elevating water devices typically range?
The source pumper -ANSWER.During relay pumping, which pumper should be the largest
capacity pumper?
The scene pumper -ANSWER.Relay pumping evolutions should be shut down at what
pumper first?
, 10 feet of lift
20 feet of hard suction -ANSWER.Pumper capacities are set at draft with how many feet of
lift? And through how many feet of hard suction?
150 psi -ANSWER.Pumpers should flow how many psi at 100% capacity?
200 psi -ANSWER.Pumpers should flow how many psi at 70% capacity?
250 psi -ANSWER.Pumpers should flow how many psi at 50% capacity?
Back pressure -ANSWER.Head pressure equals?
Acceptance test -ANSWER.What is the test performed at the factory or after delivery to
assure the purchaser that the apparatus meets BID specifications?
True -ANSWER.Pressure supplied to a hose should not exceed that at which it is annually
tested. True or False?
300 gpm -ANSWER.Master streams have flows of over how many gpm?
True -ANSWER.On a standpipe system, firefighters should disconnect house lines and use
their own hoses. True or False?
200 psi -ANSWER.The maximum allowable pressure for a relay is how many psi?
0 psi -ANSWER.What is the friction loss for appliances with flows of less than 350 psi?
10 psi -ANSWER.What is the friction loss for appliances with flows of more than 350 psi?
True -ANSWER.There is no "positive mechanical blockage" between the intake and
discharge sides of a centrifugal pump. True or False?
An air leak
or
Air in the pump -ANSWER.What is the most common reason for loss of prime?
1,500 gallons -ANSWER.What is the maximum tank capacity, in gallons, for a single rear
axle fire unit?
Incoming pressure -ANSWER.A centrifugal pump takes advantage of what type of
pressure?
L x W x H= V (volume) -ANSWER.What is the Formula for finding the volume of a square or
rectangle?
