semplr.

Exams · Certifications · Licensing

Mobile Crane Operator — Core Knowledge

Scenarios: practice questions

Our Crane Operator bank has 20 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.

Start the free mock exam

Question 1

During setup, the operator sees overhead power lines within 20 feet of the work zone. What is the next step?

  1. Determine the line voltage and minimum approach distance, and implement OSHA encroachment prevention measures
  2. Ask a laborer to hold the line
  3. Proceed carefully
  4. Raise the boom to check
Show the answer

A. Determine the line voltage and minimum approach distance, and implement OSHA encroachment prevention measures — 1926.1408.

Question 2

The crane must travel with a suspended load. What should the operator check?

  1. The manufacturer's pick-and-carry chart and the travel path
  2. Only the radio
  3. Only the fuel
  4. Nothing
Show the answer

A. The manufacturer's pick-and-carry chart and the travel path — Travel with loads is limited and must follow the chart.

Question 3

A signal person you can't see gives signals by radio and the radio fails. What should you do?

  1. Sound the horn and continue the lift
  2. Continue using hand signals from memory, even though you can't see the signal person
  3. Guess the next move
  4. Stop all crane movement until communication is restored
Show the answer

D. Stop all crane movement until communication is restored — No signal, no movement.

Question 4

The crane is set up near a trench. What is the concern?

  1. It only affects swing speed
  2. No concern
  3. Outriggers near excavations can cause cave-ins and tipping
  4. The trench improves stability by letting the outrigger floats sit lower in the ground
Show the answer

C. Outriggers near excavations can cause cave-ins and tipping — Keep outriggers clear of excavation edges.

Question 5

An operator finds the anti-two-block device isn't working. What should they do?

  1. Disconnect it fully
  2. Not operate until it's repaired, or follow OSHA's temporary alternative measures if allowed
  3. Operate normally
  4. Lift only heavy loads
Show the answer

B. Not operate until it's repaired, or follow OSHA's temporary alternative measures if allowed — 1926.1415 sets the rules.

More Crane Operator topics