Driver Operator Chapter 10

Question 1

The modern fire department pumper is equipped with a \_\_\_\_ as its main pump.
A: Rotary pump
B: Centrifugal pump
C: Hand operated pump
D: Positive displacement pump

Answer 1

B: Centrifugal pump

Question 2

Unlike centrifugal pumps, positive displacement pumps:
A: Can pump air
B: Cannot pump air
C: Are used exclusively on modern fire apparatus
D: Depend on water produced by force to provide the necessary pump discharge pressure for effective operation

Answer 2

A: Can pump air

Question 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 water tight case
A rapidly revolving disk that throws water introduced at its center toward the outer edge of the disk

Answer 3

B: A piston that moves back and forth or up and down inside a cylinder

Question 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

Answer 4

D: Speed of the piston

Question 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

Answer 5

B: Cylinder

Question 6

The rotary gear pump consists of:
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 water tight case
D: A rapidly revolving disk that throws water introduced at its center toward the outer edge of the disk

Answer 6

C: Two gears that rotate in a tightly meshed pattern inside a water tight case

Question 7

The total amount of water that can be pumped by a rotary gear pump depends on the size of the \_\_\_\_ and speed of rotation.
A: Gear tooth
B: Depth of gears
C: Pockets in the gears
D: Diameter of the gears

Answer 7

C: Pockets in the gears

Question 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

Answer 8

D: Rotary vane pumps