Chapter 18 Flashcards
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.
C.rectangle formed at each corner by the tires of the apparatus.
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.
C.does not extend outside of the base of stability.
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.
A.gravity circle extends beyond the base of stability.
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
B.Stabilizers
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
A.Box stabilizers
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.
D.properly positioned in accordance with the conditions on the scene.
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.
C.whether or not the apparatus is equipped with a fire pump.
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.
A.this action will lower the water supply to the nozzles.
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.
B.ensure one move and one setup without having to reposition.
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
A.Chock the wheels.
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
D.Whether the surface the stabilizers are resting on is stable enough to continue operations
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.
B.provide hydraulic power to the stabilizing system.
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
A.Even terrain
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
A.box
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.
C.Fulcrum-type stabilizers can only be deployed in the fully extended position.
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.
C.uphill side of the apparatus.
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
B.Using the stabilizers to level the apparatus as much as possible
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
A.Pre-incident planning
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.
C.Melting ice can create an air gap between the stabilizer pad and the ground.
20.Which component prevents the movement of fluid within the stabilization system? (662)
A.Interlock
B.Stabilizers
C.Selector valve
D.Holding valves
D.Holding valves
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
C.Transfer of hydraulic power from the stabilizer system to aerial operations
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.
C.setting the apparatus directly on one or both of the chocks.
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.
C.all personnel and equipment are clear of the apparatus.
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.
A.it avoids undue stress on any component of the apparatus.
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.
A.older midship and tractor-drawn aerials.
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
B.Manual stabilizers
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
C.60
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.
A.damage to the truck may occur.
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.
D.most modern apparatus are equipped with stabilization systems capable of stabilizing the apparatus, whether jackknifed or not.
