Exam Practice Test 100 Questions And

Certified Crane Operator Certification Exam Practice Test 100 Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

Q1. What is the primary purpose of a crane load chart?

• To provide crane maintenance intervals
• To indicate the crane’s lifting capacities under specific conditions
• To outline operator certification requirements
• To provide rigging hardware standards

Rationale: Load charts specify maximum lifting capacity for given

configurations and conditions to ensure safe operations.Q2. Which factor most significantly reduces crane lifting capacity?

• Engine temperature
• Boom angle
• Fuel level
• Tire pressure 1 / 4

Rationale: As boom angle decreases (boom extends outward), lifting

capacity decreases.Q3. What is the most common cause of crane tip-overs?

• Weather changes
• Overloading
• Operator illness
• Low fuel

Rationale: Exceeding rated capacity places excessive moment load on the

crane, leading to tip-overs.

Q4. A crane’s “working radius” is defined as:

• Boom length
• Load weight
• Horizontal distance from center of rotation to load hook
• Counterweight size

Rationale: Working radius measures horizontal distance, a key variable in

capacity calculations.Q5. Who is responsible for verifying load weight before lifting?

• Fuel attendant
• Signal person
• Crane operator and lift supervisor
• Maintenance technician

Rationale: Operator and supervisor must confirm load weight to ensure

safe lift planning. 2 / 4

Q6. Which type of crane typically has outriggers?

• Tower crane
• Mobile hydraulic crane
• Overhead bridge crane
• Floating crane

Rationale: Mobile hydraulic cranes use outriggers to stabilize during lifting.

Q7. What does OSHA require before operating a crane near power lines?

• Employer sign-off
• A minimum clearance distance
• A weather report
• A test lift

Rationale: OSHA mandates minimum approach distances to prevent

electrocution.

Q8. Tag lines are used to:

• Determine load weight
• Adjust boom angle
• Control load rotation
• Secure crane counterweights

Rationale: Tag lines help guide or stabilize loads.

Q9. What is the function of a boom stop?

• Prevent overloading
• Secure counterweights
• Limit boom movement past a safe point 3 / 4

• Measure boom angle

Rationale: Boom stops prevent structural damage by limiting upward

boom movement.Q10. Which lift requires a detailed lift plan?

• Any lift under 500 pounds
• Every routine lift
• Critical lift
• Test lift

Rationale: Critical lifts involve high risk and require thorough planning.

Q11. Which signal takes priority when multiple people are giving signals?

• Supervisor
• Emergency stop signal
• Rigger
• Foreman

Rationale: Emergency stop commands must always be obeyed

immediately.Q12. What is the main purpose of a counterweight?

• Increase boom length
• Counteract tipping forces
• Control load sway
• Mark load radius

Rationale: Counterweights balance lifting moment to prevent tipping.

• / 4