IFSTA DRIVER OPERATOR QUESTIONS AND
ANSWERS (2023/2024) (VERIFIED ANSWERS)
1). When a relay pumping is complete which engine should shut down first
Ans: ATTACK ENGINE AT THE SCENE
2). When relay pumping which mode should the total control be in
Ans: RPM MODE
3). The maximum height of allowable lift is affected by what 3 things
Ans: LENGTH OF INTAKE HOSE
AMOUNT OF NEGATIVE PRESSURE FROM PRIMING DEVICE
EXISTING ATMOSPHERIC PRESSURE
4). How much water should be surrounding the strainer in a drafting operation
Ans: 2 FT IN ALL DIRECTIONS
5). Voltmeters function
Ans: BATTERY CONDITION
6). Ammeters function
Ans: STATUS OF THE VEHICLES ALTERNATOR AND CHARGING SYSTEM
7). How does the electronic governor protect the engine from cavatation
Ans: RETURNING THE ENGINE TO IDLE WHEN INTAKE PRESSURE DROPS BELOW 30
PSI
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, 8). Most common type of valve that offers minimum friction loss
Ans: BALL VALVE
9). How many shafts and drive trains per impeller
Ans: ONE
10). Two types of centrifugal pumps
Ans: MULTI AND SINGLE STAGE
11). Volute
Ans: WATER PASSAGE OF GRADUALLY INCREASING SIZE AS IT NEARS THE
DISCHARGE
12). Speed of the impeller is directly correlated to what ?
Ans: PRESSURE
13). Which type of pump is not self priming
Ans: CENTRIFUGAL PUMP
14). In which pump is the rotor mounted off center inside the housing
Ans: ROTARY VANE PUMP
15). Two common indicator valves
Ans: PIV
OS&Y
16). Primary feeders
Ans: The largest-diameter pipes in a water distribution system, carrying the greatest
amounts of water.
17). Dead end hydrant
PaperStoc.com Page 2 of 5
ANSWERS (2023/2024) (VERIFIED ANSWERS)
1). When a relay pumping is complete which engine should shut down first
Ans: ATTACK ENGINE AT THE SCENE
2). When relay pumping which mode should the total control be in
Ans: RPM MODE
3). The maximum height of allowable lift is affected by what 3 things
Ans: LENGTH OF INTAKE HOSE
AMOUNT OF NEGATIVE PRESSURE FROM PRIMING DEVICE
EXISTING ATMOSPHERIC PRESSURE
4). How much water should be surrounding the strainer in a drafting operation
Ans: 2 FT IN ALL DIRECTIONS
5). Voltmeters function
Ans: BATTERY CONDITION
6). Ammeters function
Ans: STATUS OF THE VEHICLES ALTERNATOR AND CHARGING SYSTEM
7). How does the electronic governor protect the engine from cavatation
Ans: RETURNING THE ENGINE TO IDLE WHEN INTAKE PRESSURE DROPS BELOW 30
PSI
PaperStoc.com Page 1 of 5
, 8). Most common type of valve that offers minimum friction loss
Ans: BALL VALVE
9). How many shafts and drive trains per impeller
Ans: ONE
10). Two types of centrifugal pumps
Ans: MULTI AND SINGLE STAGE
11). Volute
Ans: WATER PASSAGE OF GRADUALLY INCREASING SIZE AS IT NEARS THE
DISCHARGE
12). Speed of the impeller is directly correlated to what ?
Ans: PRESSURE
13). Which type of pump is not self priming
Ans: CENTRIFUGAL PUMP
14). In which pump is the rotor mounted off center inside the housing
Ans: ROTARY VANE PUMP
15). Two common indicator valves
Ans: PIV
OS&Y
16). Primary feeders
Ans: The largest-diameter pipes in a water distribution system, carrying the greatest
amounts of water.
17). Dead end hydrant
PaperStoc.com Page 2 of 5
