Chapter 18

Question 1

1.​If the aerial device is deployed without first setting apparatus stabilizers, the base of stability is limited to the: (642)
​A.​circle formed by the 360-degree rotation of the aerial device.
​B.​stability of the surface that is directly beneath the apparatus.
​C.​rectangle formed at each corner by the tires of the apparatus.
​D.​stability of the surrounding terrain within the immediate location of the apparatus.

Answer 1

​C.​rectangle formed at each corner by the tires of the apparatus.

Question 2

2.​Rotating the aerial device 360 degrees will trace a gravity circle, and the apparatus should remain stable as long as this gravity circle: (642)
​A.​stays consistent in size throughout operations.
​B.​does not extend outside of the apparatus tires.
​C.​does not extend outside of the base of stability.
​D.​grows smaller as the aerial device extends during operations.

Answer 2

​C.​does not extend outside of the base of stability.

Question 3

3.​Extending the aerial device on the short-jacked side of the apparatus will likely overturn the apparatus if the: (643)
​A.​gravity circle extends beyond the base of stability.
​B.​gravity circle shrinks within the base of the apparatus tires.
​C.​aerial apparatus is extended further than half of its capacity.
​D.​aerial apparatus is raised more than 40 degrees above the horizon.

Answer 3

​A.​gravity circle extends beyond the base of stability.

Question 4

4.​What are required to prevent the apparatus from tipping as the aerial device is extended away from the centerline of the chassis? (644)
​A.​Interlock
​B.​Stabilizers
​C.​Selector valve
​D.​Holding valves

Answer 4

​B.​Stabilizers

Question 5

5.​Which type of stabilizers extend straight away from the truck and have jacks that extend straight down to the ground? (644)
​A.​Box stabilizers
​B.​X-style stabilizers
​C.​A-frame stabilizers
​D.​Post-type stabilizers

Answer 5

​A.​Box stabilizers

Question 6

6.​The driver/operator should not engage the PTO until the aerial apparatus has been: (645)
​A.​shut off for several minutes to cool the systems down.
​B.​running idle for several minutes to warm up the systems.
​C.​properly inspected by the safety officer at the scene before use.
​D.​properly positioned in accordance with the conditions on the scene.

Answer 6

​D.​properly positioned in accordance with the conditions on the scene.

Question 7

7.​Procedures for engaging and disengaging PTOs on aerial apparatus depend on the type of transmission the apparatus has and: (646)
​A.​the specific height and weight of the apparatus.
​B.​the maximum extension of the apparatus’ aerial device.
​C.​whether or not the apparatus is equipped with a fire pump.
​D.​whether or not the apparatus is equipped with box stabilizers.

Answer 7

​C.​whether or not the apparatus is equipped with a fire pump.

Question 8

8.​When the fire pump is already activated and in use, the driver/operator must notify personnel on handlines and other nozzles when they are activating the hydraulic system because: (646)
​A.​this action will lower the water supply to the nozzles.
​B.​this action will increase the water supply to the nozzles.
​C.​this action may affect the water supply in an unpredictable way.
​D.​this action will stop the water supply to any nozzles or handlines.

Answer 8

​A.​this action will lower the water supply to the nozzles.

Question 9

9.​When positioning the aerial apparatus and deploying the stabilizers during an emergency, the goal is to: (646-651)
​A.​only deploy the apparatus when it is absolutely needed.
​B.​ensure one move and one setup without having to reposition.
​C.​deploy as quickly as possible, even if it means cutting corners.
​D.​ensure the best position, even if it means having to reposition.

Answer 9

​B.​ensure one move and one setup without having to reposition.

Question 10

10.​What must be done before the deployment of the stabilizers? (651)
​A.​Chock the wheels.
​B.​Make sure each stabilizer is bearing weight.
​C.​Make sure the aerial device is properly bedded.
​D.​Transfer hydraulic power from the stabilizer system to the aerial operations system

Answer 10

​A.​Chock the wheels.

Question 11

11.​What should the driver/operator check once the stabilizers are in place? (652)
​A.​If each stabilizer is exactly the same height as all of the other stabilizers
​B.​If the stabilizer shoes need to be placed underneath the stabilizers
​C.​Whether the stabilizer needs to be short-jacked due to restricted space
​D.​Whether the surface the stabilizers are resting on is stable enough to continue operations

Answer 11

​D.​Whether the surface the stabilizers are resting on is stable enough to continue operations

Question 12

12.​Once the driver/operator is assured that the preliminary activities are successfully completed and the ground is prepared for stabilization activities, the selector valve may be operated to: (653)
​A.​activate the interlock of the stabilizers.
​B.​provide hydraulic power to the stabilizing system.
​C.​activate the retraction sequence of the stabilizers.
​D.​provide hydraulic power to the aerial operation system.

Answer 12

​B.​provide hydraulic power to the stabilizing system.

Question 13

13.​Which type of terrain allows for the maximum stability of the apparatus and for the greatest range of safe movement of the aerial apparatus? (654)
​A.​Even terrain
​B.​Uphill terrain
​C.​Uneven terrain
​D.​Downhill terrain

Answer 13

​A.​Even terrain

Question 14

14.​When operating ___ stabilizers, the first operation is to extend the parallel arms to their maximum travel distance, if possible. (654)
​A.​box
​B.​X-style
​C.​A-frame
​D.​post-type

Answer 14

​A.​box

Question 15

15.​What is the primary difference between box stabilizers and fulcrum-type stabilizers? (657)
​A.​Fulcrum-type stabilizers can only be deployed in a short-jacked position.
​B.​Fulcrum-type stabilizers can be deployed in any position with minimal space.
​C.​Fulcrum-type stabilizers can only be deployed in the fully extended position.
​D.​Fulcrum-type stabilizers cannot support an apparatus without another type of stabilizer for support.

Answer 15

​C.​Fulcrum-type stabilizers can only be deployed in the fully extended position.

Question 16

16.​After the apparatus is stabilized laterally on uneven terrain, it is preferable to operate the aerial device over the: (659)
​A.​front of the apparatus.
​B.​back of the apparatus.
​C.​uphill side of the apparatus.
​D.​downhill side of the apparatus.

Answer 16

​C.​uphill side of the apparatus.

Question 17

17.​Which is a way to minimize stresses on the aerial device when positioning an apparatus on a longitudinal grade? (660)
​A.​Placing the apparatus crosswise on the grade
​B.​Using the stabilizers to level the apparatus as much as possible
​C.​Operating articulating aerial devices off of the front of the vehicle
​D.​Operating the aerial device directly over either side of the apparatus

Answer 17

​B.​Using the stabilizers to level the apparatus as much as possible

Question 18

18.​Which will BEST help identify areas that are safe and unsafe for aerial apparatus placement? (661)
​A.​Pre-incident planning
​B.​Emergency scene survey
​C.​Driver/operator’s best judgment
​D.​Company officer’s knowledge of the area

Answer 18

​A.​Pre-incident planning

Question 19

19.​What effect can melting ice have on stabilization? (661)
​A.​Melting ice can cause significant damage and leaking of hydraulic fuel.
​B.​Melting ice can cause significant damage outside of the stabilizers.
​C.​Melting ice can create an air gap between the stabilizer pad and the ground.
​D.​Melting ice can freeze the stabilizers to the ground, making retraction difficult.

Answer 19

​C.​Melting ice can create an air gap between the stabilizer pad and the ground.

Question 20

20.​Which component prevents the movement of fluid within the stabilization system? (662)
​A.​Interlock
​B.​Stabilizers
​C.​Selector valve
​D.​Holding valves

Answer 20

​D.​Holding valves

Question 21

21.​Which procedure must be completed in order for the driver/operator to be ready to mount the turntable and operate the aerial device? (663)
​A.​The deactivation of the PTO system to secure the apparatus in place
​B.​The retraction of the stabilizers to transfer power to the aerial device
​C.​Transfer of hydraulic power from the stabilizer system to aerial operations
​D.​Transfer of hydraulic power from the aerial operations to the stabilizer system

Answer 21

​C.​Transfer of hydraulic power from the stabilizer system to aerial operations

Question 22

22.​Before retracting the stabilizers, the wheel chocks should be moved slightly away from the tires as an extra precaution to prevent: (663)
​A.​damage to the tires from the chocks.
​B.​the retracting stabilizers from damaging the chocks.
​C.​setting the apparatus directly on one or both of the chocks.
​D.​the chocks from getting in the way of the retracting stabilizers.

Answer 22

​C.​setting the apparatus directly on one or both of the chocks.

Question 23

23.​Before retracting the stabilizers, the driver/operator should make sure that: (663)
​A.​the stabilizer pads are placed correctly.
​B.​the stabilizers are all firmly in contact with the ground.
​C.​all personnel and equipment are clear of the apparatus.
​D.​the PTO engagement light is on before leaving the cab.

Answer 23

​C.​all personnel and equipment are clear of the apparatus.

Question 24

24.​Stabilizers should always be raised following the reverse order by which they were deployed because: (663)
​A.​it avoids undue stress on any component of the apparatus.
​B.​it is the easiest method for the driver/operator to remember.
​C.​doing so will cause less strain on potentially unstable terrain.
​D.​doing so will require less hydraulic power to retract the stabilizers.

Answer 24

​A.​it avoids undue stress on any component of the apparatus.

Question 25

25.​Manual stabilizers are most likely to be found on: (664)
​A.​older midship and tractor-drawn aerials.
​B.​modern midship and tractor-drawn aerials.
​C.​older water towers and elevating platform aerials.
​D.​modern aerial ladders and elevating platform aerials.

Answer 25

​A.​older midship and tractor-drawn aerials.

Question 26

26.​In which type of stabilizer must the driver/operator swing the extension arm into place and turn the screw jack manually? (664)
​A.​Box stabilizers
​B.​Manual stabilizers
​C.​Post-type stabilizers
​D.​Fulcrum-type stabilizers

Answer 26

​B.​Manual stabilizers

Question 27

27.​Maximum stability is achieved with a tractor-drawn aerial apparatus when the angle of the tractor is ___ degrees from the centerline of the trailer. (665)
​A.​20
​B.​40
​C.​60
​D.​80

Answer 27

​C.​60

Question 28

28.​The driver/operator should never position a tractor-drawn aerial apparatus with the tractor and trailer at an angle greater than 90 degrees because: (665)
​A.​damage to the truck may occur.
​B.​it requires more space than is usually available.
​C.​it requires a great amount of fuel to operate in that position.
​D.​such a position limits the maximum reach of the aerial device.

Answer 28

​A.​damage to the truck may occur.

Question 29

29.​Techniques for jackknifing tillered aerial apparatus are more important on older models of apparatus than on modern tillered aerial apparatus because: (665)
​A.​most modern apparatus are built with higher quality materials than most older models of apparatus.
​B.​all modern apparatus are built with much stricter safety regulations and requirements than older models were.
​C.​all modern manufacturers guarantee full replacement of their apparatus if they sustain damage while under warranty.
​D.​most modern apparatus are equipped with stabilization systems capable of stabilizing the apparatus, whether jackknifed or not.

Answer 29

​D.​most modern apparatus are equipped with stabilization systems capable of stabilizing the apparatus, whether jackknifed or not.