Landbased Technician Accreditation Agricultural Drones, Robotics & Automation: practice questions

Question 1 · medium

A camera footprint is 120 m across track. What flight-line spacing gives 70% side overlap?

1. 50 m
2. 84 m
3. 120 m
4. 36 m

Question 2 · hard

A camera's footprint is 90 m along track. The plan asks for 80% forward overlap at a ground speed of 10 m/s. How often must the camera take a picture?

1. Every 7.2 s
2. Every 9.0 s
3. Every 1.8 s
4. Every 0.18 s

Question 3 · medium

A drone operator sets the lane spacing wider than the measured effective swath to finish a field faster. What is the most likely result?

1. No change in deposit, because the flight controller automatically raises the pump flow
2. A higher dose across the whole field, because each pass carries the same liquid further across the gap
3. Less drift, because wider lanes mean the drone flies fewer passes over the same area
4. Stripes of under-dosed crop between passes where the deposit pattern no longer overlaps enough

Question 4 · medium

Why must a drone operator check that a pesticide's label or national approval covers drone application before using it?

1. Labels set the drone's flight height, which the aviation authority then enforces as the legal maximum for that crop
2. Any product approved for ground spraying is automatically approved for drones in all countries
3. Drone volumes are low, so the tank mix is far more concentrated than the ground-sprayer use that was assessed
4. Drone pumps cannot handle suspension concentrates, so the label lists which formulations will flow through

Question 5 · easy

Many national drone frameworks set a routine maximum height for drone flights. Which value is that limit commonly close to?

1. 120 m (about 400 ft) above ground
2. 30 m (about 100 ft) above ground
3. 500 m (about 1,600 ft) above ground
4. 1,000 m (about 3,300 ft) above ground

Question 6 · easy

What does a visual line of sight (VLOS) condition require of a drone pilot?

1. The aircraft flies only in daylight, though it may go beyond where the pilot can see it
2. The aircraft stays within radio range of the controller, whether or not anyone on the ground can actually see it
3. The pilot or a visual observer can see the aircraft directly, without aids like binoculars or video
4. The aircraft's camera feed shows the horizon clearly on the ground station for the whole flight

Question 7 · medium

A drone spraying contractor with years of experience at home takes a job in another country. What must be checked first?

1. Only the drone maker's manual, because it states the legal operating limits for every market it ships to
2. Nothing new, because international aviation agreements make drone licences valid in every member country without any further test
3. Only the pesticide label, because aviation authorities do not regulate flights below the height of trees
4. The current national aviation rules for drone operations and whether the product is approved there for drone application

Question 8 · easy

Why should a spray drone be washed and dried after each day's spraying?

1. Washing lowers the frame's weight, which raises the payload rating for the next day of spraying work
2. Pesticide residues corrode connectors, motors and electronics and can contaminate the next job
3. Aviation rules require a clean airframe before each flight, whatever the job done
4. Water cools the batteries, which restores the capacity used during the day's flying

Question 9 · medium

A weed-mapping study needs each 2 cm wide seedling to span at least 5 pixels. What is the largest ground sample distance that meets this?

1. 0.4 cm
2. 4.0 cm
3. 2.5 cm
4. 10 cm

Question 10 · medium

For a fruit whose skin tears when pulled, which detachment method is a robot end-effector most likely to use?

1. Cutting the peduncle with a blade, scissors or heated element after the fruit is held
2. Squeezing the fruit hard enough that the stem separates at the abscission layer
3. Pulling straight away from the plant at high speed so the stem breaks before the skin
4. Shaking the whole plant so the fruit falls into a net held below the canopy