1st step: Hydraulic DERRICKS Exam
Questions & Answers (Grade A+)
True or false: a digger Derrick with the pedestal at the back of the
truck and the boom stored over the truck cab is known as a rear
mount -
correct answer ✅True
The whole boring tool of a digger Derrick is called -
correct answer ✅Auger
The dump valve is used to -
correct answer ✅Temporarily stopped all hydraulic action
True or false: the hook radius is the distance from the boom tip
sheave straight down to the ground -
correct answer ✅False (the hook radius is the distance from the
pedestal to the boom tip sheave measured in a line parallel to the
ground)
The _______ ________ is the distance from the boom tip sheave
straight down to the ground -
correct answer ✅Sheave height
, 1st step: Hydraulic DERRICKS Exam
Questions & Answers (Grade A+)
Choose the correct answers: the three classifications of digger
Derricks are -
correct answer ✅Corner mount
Center mount
Rear mount
True or false the boom on a digger truck can be raised, lowered and
swung in a full circle -
correct answer ✅True
True or false: all augurs are designed to do all types of digging -
correct answer ✅False
A _________ _______ located on the pedestal controls the speed
of the ________ _________, which powers the hydraulics system -
correct answer ✅Throttle pedal
Trucks engine
Questions & Answers (Grade A+)
True or false: a digger Derrick with the pedestal at the back of the
truck and the boom stored over the truck cab is known as a rear
mount -
correct answer ✅True
The whole boring tool of a digger Derrick is called -
correct answer ✅Auger
The dump valve is used to -
correct answer ✅Temporarily stopped all hydraulic action
True or false: the hook radius is the distance from the boom tip
sheave straight down to the ground -
correct answer ✅False (the hook radius is the distance from the
pedestal to the boom tip sheave measured in a line parallel to the
ground)
The _______ ________ is the distance from the boom tip sheave
straight down to the ground -
correct answer ✅Sheave height
, 1st step: Hydraulic DERRICKS Exam
Questions & Answers (Grade A+)
Choose the correct answers: the three classifications of digger
Derricks are -
correct answer ✅Corner mount
Center mount
Rear mount
True or false the boom on a digger truck can be raised, lowered and
swung in a full circle -
correct answer ✅True
True or false: all augurs are designed to do all types of digging -
correct answer ✅False
A _________ _______ located on the pedestal controls the speed
of the ________ _________, which powers the hydraulics system -
correct answer ✅Throttle pedal
Trucks engine
