Equipment Operation & Controls Flashcards
7 cards from real MEOC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Equipment Operation & Controls flashcards as text
An operator needs to dig a bucket-width trench to a depth of 8 feet. The most efficient digging sequence is:
Answer: Multiple shallow passes, progressively deepening with each pass
Progressive shallow passes maintain better control, prevent bucket overloading, and reduce hydraulic stall on deep trenches.
What is the function of the travel speed switch (turtle/rabbit) on a mini excavator?
Answer: Toggles the travel motors between low-speed/high-torque and high-speed/low-torque modes
The turtle (low) mode provides high torque for rough terrain, while rabbit (high) mode allows faster travel on flat, firm surfaces.
When the bucket curl (close) lever is held at maximum displacement but the bucket barely moves, the most likely cause is:
Answer: Relief valve opening due to excessive bucket curl pressure
When a cylinder reaches its force limit against resistance, the relief valve bypasses oil to protect the system, stalling the movement.
In the SAE joystick control pattern (as opposed to ISO), the right joystick controls:
Answer: Boom up/down and bucket curl/dump
In SAE (also called BHL or Deere) pattern, the right joystick operates boom and bucket; left operates swing and arm.
What should the operator do before rotating the upper structure to swing spoil to a truck?
Answer: Verify the swing path is clear of personnel and obstructions
A loaded bucket swinging at speed is a serious struck-by hazard; the operator must confirm the swing path is clear before rotating.
Which control input simultaneously raises the boom and curls the bucket to achieve a clean, level finish grade?
Answer: Right joystick pushed forward (boom up) while simultaneously rolling thumb trigger or right stick left (bucket curl)
Coordinating boom-up with bucket curl maintains the cutting edge at the same elevation, producing a level finished grade.
A mini excavator's rated operating load (ROL) is typically expressed as a percentage of its tipping load. What is the standard US percentage used?
Answer: 75% of the tipping load
ANSI/SAE standards require the rated operating load to be no more than 75% of the actual tipping load to maintain a safety margin.