Chapter 10 Pump Ops
1. The modern fire department pumper is equipped with a ______ as its main pump.
a. Rotary pump
b. Centrifugal pump
c. operated pump
d. Positive displacement pump
2. Unlike centrifugal pumps, positive displaced and pumps:
a. Can pump air
b. Cannot pump water
c. Are used exclusively on modern fire apparatus
d. Depend on water produced by forced to provide the necessary pump discharge pressure for
effective operation
3. What provides for the movement of the water through a piston positive displacement pump?
a. Multiple impellers for each stage mounted within a single housing
b. A piston that moves back and forth or up and down inside a cylinder
c. Two gears that rotate in a tightly Meshed pattern inside a watertight case
d. A rapidly revolving disk that throws water introduced at its center toward the outer edge of the
disk
4. The output of the piston positive displacement pump is determined by the size of the cylinder and the:
a. Weight of the piston
b. Diameter of the piston
c. Length of the piston
d. Speed of the piston travel
5. The capacity of a piston positive displacement pump is usually determined by the size of the:
a. Piping
b. Cylinder
c. Gear pump
d. Centrifugal pump
Chapter 10 Pump Ops
6. The rotary gear pump consist of:
a. Multiple impellers for each stage mounted within a single housing
b. A piston that moves back in fourth or up and down inside a cylinder
c. Two years that rotate in a tightly Meshed pattern inside a watertight case
d. A rapidly revolving disk that throws water introduced at its center toward the outer edge of the
disk
7. The total amount of water that can be pumped by a rotary gear pump depends on the size of the
______and the speed of rotation.
a. Gear tooth
b. Depth of the gears
c. Pockets in that gears
d. Diameter of the gears
8. Which of the following is one of the most common types of pumps used to prime centrifugal pumps?
a. Piston pumps
b. Multi stage pumps
c. Single stage pumps
d. Rotary vane pumps
9. In a rotary vane pump,
a. The rotor is mounted off center inside the housing
b. A piston moves back and forth or up and down inside a cylinder
c. Multiple impellers for each stage are mounted within a single housing
d. A rapidly in revolving disc throws water introduced at its center toward the outer age of the
disk
10. The centrifugal pump imparts _______two the water and converts it to pressure within the pump
itself.
a. Velocity
b. Viscosity
c. Turbidity
d. Turgidity
Chapter 10 Pump Ops
11. The operation of a centrifugal pump is based on the principle that:
a. The rotor is mounted off center inside the housing
b. A piston moves back and forth or up and down inside a cylinder
c. Multiple impellers for each stage are mounted within a single housing
d. A rapidly revolving disc throws water introduced at its center toward the outer edge of the disk
12. The ______of the centrifugal pump transmits energy in the form of velocity to the water
a. Casing
b. Volute
c. Impeller
d. Rotary gear
13. The ______of the centrifugal pump collects the water and confines it in order to convert the velocity to
pressure
a. Casing
b. Volute
c. Impeller
d. Rotary gear
14. The _______ of the centrifugal pump is a water passage that gradually increases in cross sectional area
as it nears the pump discharge outlet.
a. Casing
b. Volute
c. Impeller
d. Rotary gear
15. Which of the following is NOT a factor that influences a centrifugal fire pumps discharge pressure?
a. Amount of water being discharged
b. Speed at which the Impeller is turning
c. Size of the volute and Impeller inside the pump
d. Pressure of water when it enters the pump from a pressurized source
16. Which of the following pumps does NOT use a single intake Impeller?
a.
b.
c.
d.
From mount pumps
Rotary gear pumps
Power tank off pumps
Midship transfer pumps
Chapter 10 Pump Ops
17. Which of the following centrifugal fire pumps cause impellers to be capable of delivering their rated
pressure while flowing 50% of the rated capacity so that the total amount of water the pump can
deliver is equal to the sum of each stage?
a. Single stage centrifugal pumps
b. Multi stage centrifugal pumps
c. Multi stage centrifugal pumps in the parallel ( volume) Position
d. Multi stage centrifugal pumps in the series (pressure) Position
18. Which of the following centrifugal fire pumps have an Impeller for each stage mounted within a single
housing?
a. Single stage centrifugal pumps
b. Multi stage centrifugal pumps
c. Rotary vane centrifugal pumps
d. Rotary gear centrifugal pumps
19. Which of the following centrifugal fire pumps are constructed with a single Impeller?
a. Single stage centrifugal pumps
b. Multi stage centrifugal pumps
c. Multi stage centrifugal pumps in the parallel ( volume) Position
d. Multi stage centrifugal pumps in the series (pressure) Position
20. Which of the following centrifugal fire pumps work by directing all water from the manifold into the
eye of the first Impeller, increasing the pressure and discharging 50 to 75% of the volume capacity
through the transfer valve and into the eye of the second Impeller?
a. Single stage centrifugal pumps
b. Multi stage centrifugal pumps
c. Multi stage centrifugal pumps in the parallel ( volume) Position
d. Multi stage centrifugal pumps in the series (pressure) Position
21. What is changeover?
a. The process of switching between the pressure and volume position
b. The process of changing from a single stage pumps to a multi stage pumps
c. The process of viscosity being converted to pressure within a centrifugal pump
d. The process of changing from a positive displaced pump to a centrifugal pump
Chapter 10 Pump Ops
22. Most manufacturers specify that the pump may remain in the pressure system until it is necessary to
flow more than _______of the rated volume capacity.
a. One fourth
b. One Half
c. Two thirds
d. Three fourths
23. Most manufacturers recommend that the transfer valve should be operated at a maximum pressure
of:
a. 10 PSI
b. 20 PSI
c. 35 PSI
d. 50 PSI
24. Packing rings are used to make a seal at the point where the shaft passes through the:
a. Volute
b. Impeller
c. Gear box
d. Pump casing
25. As packing ratings wear with the operation of the shaft, the _______can be tightened and the leak
control.
a. Lantern ring
b. Packing gland
c. Gear sprocket
d. Hub adjusting nut
26. What are supplied to provide cooling and lubrication between the packing ring and shaft?
a. Lantern ring
b. Packing gland
c. Gear sprocket
d. Hub adjusting nut
Chapter 10 Pump Ops
27. If the pump is operated _______for any length of time, it can damage the shaft.
a. Dry
b. Wet
c. Hot
d. Cold
28. Pumps equipped with ________ will not drip and will not require adjustment.
a. lantern rings
b. Packing seals
c. Gear sprockets
d. Mechanical seals
29. Which pumps are powered by a gasoline or diesel engines independent of an engine used to drive the
vehicle?
a. Midship pumps
b. Front mount pumps
c. Auxiliary engine driven pumps
d. Power take off driven fire pumps
30. Which pumps can obstruct air flow through the vehicle’s radiator and contribute to engine
overheating?
a. Midship pumps
b. Front mount pumps
c. Auxiliary engine driven pumps
d. Power take off driven fire pumps
31. Which pumps are supplied power through the use of a split shaft gear case located in the drive line
between the transmission and the rear axle?
a. Midship pumps
b. Rear mount pumps
c. Front mount pumps
d. Power take off driven fire pumps
Chapter 10 Pump Ops
32. Which pumps are driven by a driveshaft that is connected to the PTO on the chassis transmission?
a. Midship pumps
b. Front mount pumps
c. Auxiliary engine driven pumps
d. Power take off driven fire pumps
33. Piping systems must be able to withstand a hydrostatic test of _______ PSI before being placed into
service.
a. 350 PSI
b. 400 PSI
c. 450 PSI
d. 500 PSI
34. Tank to pump piping should be size so that pumpers with a capacity of 500 gpm or less should be
capable of flowing ________gpm from the booster tank.
a. 250
b. 300
c. 450
d. 500
35. Tank to pump piping should be sized so that pumpers with a capacity greater than 500 gpm should be
capable of flowing at least _______gpm from the booster tank.
a. 500 gpm
b. 600 gpm
c. 800 gpm
d. 1000 gpm
36. According to NFPA 1901, enough 2 ½ inch or larger discharge outlets must be provided in order to
flow:
a. The rated capacity of the fire pump
b. Two times the rated capacity of the fire pump
c. Three times the rated capacity of the fire pump
d. Five times the rated capacity of the fire pump
Chapter 10 Pump Ops
37. All discharge valves should be designed so that they are easily operable at pressures of up to:
a. 100 PSI
b. 150 PSI
c. 200 PSI
d. 250 PSI
38. The tank fill line:
a. Should be located on the intake side of the pump
b. Provides a means of replenishing the water carried in the tank
c. Prevents overheating by allowing water to be done outside the tank on the ground
d. Allows the tank to be filled by making any additional connections when the pumper is being
supplied from an external supply source.
39. Valves control most of the _______lines from the pump.
a. Fill tank
b. Waste/dump
c. Booster cooling
d. Intake and discharge
40. Which types of valves permit full flow through the lines with a minimum of friction loss?
a. Gate valves
b. Butterfly valves
c. Ball type valves
d. Post indicator valves
41. Which types of valves display readouts of how far the valve is opened?
a. Drain valves
b. Butterfly valves
c. Ball type valves
d. Hydraulically, pneumatically, or electrical control valves
42. Gate valves are most often operated by:
a. A hand wheel
b. Push – pull handles
c. Electric actuators
d. Quarter – turn handles
Chapter 10 Pump Ops
43. Butterfly valves are most often operated by:
a. A hand wheel
b. Push – pull handles
c. Electric actuators
d. Quarter – turn handles
44. Automatic pressure control devices must not allow the pressure to exceed _______PSI above the set
level.
a. 10 PSI
b. 20 PSI
c. 30 PSI
d. 40 PSI
45. Which types of automatic pressure control devices our sensitive to pressure change and have the
ability to relieve access pressure within the pump discharge?
a. Pressure governors
b. Electronic governors
c. Intake pressure relief valves
d. Discharge pressure relief valves
46. Which types of automatic pressure control devices are intended to reduce the possibility of damage to
the pump and discharge hose lines caused by water hammer?
a. Pressure governors
b. Electronic governors
c. Intake pressure relief valves
d. Discharge pressure relief valves
47. Which types of automatic pressure control devices use a pressure sensing element connected to the
discharge manifold to control the action of an electronic pump amplifier that compares pump pressure
to an electrical reference point?
a. Pressure governors
b. Electronic governors
c. Piston assembly governors
d. Intake pressure relief valves
Chapter 10 Pump Ops
48. Which types of automatic pressure control devices relieve excess pressure that is generally caused by
shutting down one or more operating Handlines?
a. Pressure governors
b. Electronic governors
c. Piston assembly governors
d. Intake pressure relief valves
49. Which types of automatic pressure control devices have an adjustable spring loaded pilot valve that
actuates the relief valve to bypass water from the discharge to the intake chamber of the pump?
a. Pressure governors
b. Electronic governors
c. Intake pressure relief valves
d. Discharge pressure relief valves
50. Which type of primer uses an oral supply or some other type of fluid to seal the gaps between the
gears and the case and to act as a preservative and minimize deterioration?
a. Oil less Primers
b. Exhaust primers
c. Vacuum primers
d. Positive displacement primers
51. Which type of primer is environmentally friendly and does not require lubrication?
a. Oil less Primers
b. Exhaust primers
c. Vacuum primers
d. Positive displacement primers
52. Which type of primer requires that any air leaks in the pump be kept to an absolute minimum and that
suction hose and gaskets be kept in good condition?
a. Oil less Primers
b. Exhaust primers
c. Vacuum primers
d. Positive displacement primers
Chapter 10 Pump Ops
53. Which type of primer pumps the pump by connecting a line from the intake manifold of the engine to
the intake of the fire pump with a valve connected in the line to control it?
a. Oil less primers
b. Exhaust primers
c. Vacuum primers
d. Positive displacement primers
54. Which pump panel instrument provides an indication of the vacuum present at the intake of the pump
during priming?
a. Primer control
b. Master intake gauge
c. Pump pressure indicator
d. Master pump discharge pressure gauge
55. Which pump panel instrument register’s the pressure as it leaves the pump, but before it reaches the
gauges for each individual discharge line?
a. Primer control
b. Master intake gauge
c. Pump pressure indicator
d. Master pump discharge pressure gauge
56. Which pump panel instrument shows that an adequate supply of oil is being delivered to the critical
areas of the engine that is powering the fire pump?
a. Volt meter
b. Tachometer
c. Pumping engine oil pressure indicator
d. Master pump discharge pressure gauge
57. Which pump panel instrument indicates actual pressure applied to hoselines?
a. Primer control
b. Master intake gauge
c. Pump pressure indicator
d. Master pump discharge pressure gauge
Chapter 10 Pump Ops
58. Which pump panel instrument is used to increase or decrease the speed of the engine that is powering
the fire pump?
a. Primer control
b. Master intake gauge
c. Pump pressure indicator
d. Pumping engine throttle
59. Which pump panel instrument is used to operate the priming device when the pump is going to be
used to draft from a static water supply?
a. Primer control
b. Master intake gauge
c. Pump pressure indicator
d. Master pump discharge pressure gauge
60. Which pump panel instrument is intended to let the driver/operator know how much water is
remaining in the onboard water tank?
a. Primer control
b. Pump overheat indicator
c. Water tank level indicator
d. Pumping engine coolant temperature indicator
Answers
1. B (265)
11. D (270)
21. A (274)
31. A (283)
41. D (291)
51. A (300)
2. A (266)
12. C (270)
22. C (275)
32. D (281)
42. A (291)
52. B (301)
3. B (266)
13. A (270)
23. D (275)
33. D (286)
43. D (291)
53. C (301)
4. D (267)
14. B (271)
24. D (278)
34. A (286)
44. C (293)
54. B (302)
5. B (267)
15. C (271)
25. B (278)
35. A (286)
45. D (294)
55. D (303)
6. C (268)
16. B (272)
26. A (278)
36. A (288)
46. C (295)
56. C (304)
7. C (268)
17. C (273)
27. A (279)
37. D (289)
47. B (298)
57. C (305)
8. D (269)
18. B (273)
28. D (280)
38. B (289)
48. A (296)
58. D (305)
9. A (269)
19. A (272)
29. C (280)
39. D (290)
49. D (294)
59. A (306)
10. A (270)
20. D (274)
30. B (282)
40. C (290)
50. D (299)
60. C (306)