Hydraulic Derrick 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 the Rear
mount. -
correct answer ✅True
The hole-boring tool of a differ derrick is called -
correct answer ✅Auger
The dump valve is used to -
correct answer ✅Temporarily stop 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 _____________________ is the distance from the boom tip
sheave straight down to the ground. -
correct answer ✅Sheave Height
The three classifications of digger derricks are: -
correct answer ✅All of them
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 the Rear
mount. -
correct answer ✅True
The hole-boring tool of a differ derrick is called -
correct answer ✅Auger
The dump valve is used to -
correct answer ✅Temporarily stop 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 _____________________ is the distance from the boom tip
sheave straight down to the ground. -
correct answer ✅Sheave Height
The three classifications of digger derricks are: -
correct answer ✅All of them
