A56 CPCS Articulated Dump Truck Theory Questions With
Complete Solutions
A dump truck is classified by a manufacturer as a 30-tonne
machine. What does this mean? Correct Answers This is the
maximum carrying capacity of the dump truck
a) For dump trucks equipped with compressed air reservoirs for
braking, why might they need routine bleeding / discharge?
b) What is the recommended safe working practice whilst
carrying this out? Correct Answers a) Avoids water
condensation freezing in the brake lines
b) Drain periodically as per manufacturer's requirements
a) Give ONE advantage and
b) TWO disadvantages of rear-mounted cameras. Correct
Answers a) Allows the operator to see directly behind the
machine
b) 1. The camera has a limited view
2. The view can be blinded by the sunlight
a) Name THREE purposes of the raised lugs on tyres and
b) what can happen to a dump truck if the lugs are severely
worn? Correct Answers a) 1. Providing help when braking
2. Providing adherence on soft ground
3. Assisting when steering
b) Can cause skidding or sliding making steering more difficult
and the tyre more vulnerable to punctures
a) State the purpose of a retarder and
, b) the possible consequences of not using it when required.
Correct Answers a) The retarder is a device that provides a
partial braking effect on steep slopes
b) If it is not used then normal brakes have to be used which can
cause a loss of grip on steep slopes leading to loss of control
a) What determines the minimum distances that any part of plant
and machinery has to be kept from over head electricity lines
and
b) explain why a distance should be kept. Correct Answers a)
The amount of voltage that runs through the electricity lines and
the support used for the electricity lines (wooden poles or metal
poles)
b) Because the electricity can arch or jump gapsTh
a) What is the minimum distance allowed near open trenches
when travelling with a dump truck and
b) explain why? Correct Answers a) Greater than the trench
depth
b) Getting too close to a trench can cause it to collapse
a) What is the purpose of a Method Statement and
b) what is required of the operator? Correct Answers a) A
Method Statement describes how the work will be done safely
and efficiently
b) The Operator must be compliant with the Method Statement
a) Why should the body of the dump truck be raised slowly and
carefully especially with wet or sticky material and
b) what would be a consequence if this was not done? Correct
Answers a) Material could jam
Complete Solutions
A dump truck is classified by a manufacturer as a 30-tonne
machine. What does this mean? Correct Answers This is the
maximum carrying capacity of the dump truck
a) For dump trucks equipped with compressed air reservoirs for
braking, why might they need routine bleeding / discharge?
b) What is the recommended safe working practice whilst
carrying this out? Correct Answers a) Avoids water
condensation freezing in the brake lines
b) Drain periodically as per manufacturer's requirements
a) Give ONE advantage and
b) TWO disadvantages of rear-mounted cameras. Correct
Answers a) Allows the operator to see directly behind the
machine
b) 1. The camera has a limited view
2. The view can be blinded by the sunlight
a) Name THREE purposes of the raised lugs on tyres and
b) what can happen to a dump truck if the lugs are severely
worn? Correct Answers a) 1. Providing help when braking
2. Providing adherence on soft ground
3. Assisting when steering
b) Can cause skidding or sliding making steering more difficult
and the tyre more vulnerable to punctures
a) State the purpose of a retarder and
, b) the possible consequences of not using it when required.
Correct Answers a) The retarder is a device that provides a
partial braking effect on steep slopes
b) If it is not used then normal brakes have to be used which can
cause a loss of grip on steep slopes leading to loss of control
a) What determines the minimum distances that any part of plant
and machinery has to be kept from over head electricity lines
and
b) explain why a distance should be kept. Correct Answers a)
The amount of voltage that runs through the electricity lines and
the support used for the electricity lines (wooden poles or metal
poles)
b) Because the electricity can arch or jump gapsTh
a) What is the minimum distance allowed near open trenches
when travelling with a dump truck and
b) explain why? Correct Answers a) Greater than the trench
depth
b) Getting too close to a trench can cause it to collapse
a) What is the purpose of a Method Statement and
b) what is required of the operator? Correct Answers a) A
Method Statement describes how the work will be done safely
and efficiently
b) The Operator must be compliant with the Method Statement
a) Why should the body of the dump truck be raised slowly and
carefully especially with wet or sticky material and
b) what would be a consequence if this was not done? Correct
Answers a) Material could jam
