Mobile Crane Operator & Slinger Assessment

Master Question Bank — 20 Single Choice + 9 Open Questions

Candidate Name

Date

Assessor

Part A — Single Choice

Q1. When setting up a mobile crane, what should be considered?

A. All of the aboveB. Reference to the lifting planC. Correct distances from excavationsD. Correct clearances from any overhead power cable

Correct answer: B

Q2. What should you check on the stabiliser leg spreader pads prior to lifting?

A. They are of the size and design specified by the lifting planB. They have the registration number of the crane on themC. They are at least 20 millimetres thickD. They are painted in the company colours

Correct answer: A

Q3. At what wind speed should crane operations be stopped?

A. Any speed specified by the lifting planB. 25 kmphC. 15 kmphD. 20 kmph

Correct answer: A

Q4. When determining an uneven load's mass, you should:

A. Use the crane's on-board weighing equipmentB. Use a strong enough slinging system to cover all eventualitiesC. Trust the label or markings on the loadD. Break the load down into constituent uniform shapes and estimate the total mass

Correct answer: A

Q5. A crack in the windshield of a crane cab is OK so long as:

A. It causes no visible distortion that would interfere with safe operationsB. It is less than 6 inches longC. The windshield is replaced on the next annual inspectionD. It is never OK

Correct answer: A

Q6. What effect would waterlogged material, such as sand, blocks or timber, have if they make up the load to be lifted?

A. Decrease the load weightB. Have no effectC. Increase the weight of the loadD. Increase the weight of what the crane can lift

Correct answer: C

Q7. What is meant by the term 'centre of gravity' when talking about the load?

A. The middle of the loadB. The point at which the sling is attached to the loadC. The underside of the loadD. The point on the load where perfect balance occurs

Correct answer: A

Q8. During a lift and in normal circumstances when is it acceptable for the crane operator to dismount the crane?

A. The crane operator must dismount whenever requestedB. The crane operator can dismount to check that the stabilizer feet pads are still in placeC. The crane operator should remain at the crane controls at all times during a liftD. The crane operator can dismount when the rigger indicates that they need to discuss the lift

Correct answer: C

Q9. Ropes, slings and chains must be tested.

A. Every 14 monthsB. Every 12 monthsC. Every 6 monthsD. Every 18 months

Correct answer: B

Q10. Weight is constant. True or false?

A. TRUEB. FALSEC. SometimesD. Weight is the same as density

Correct answer: B

Q11. What is the hand signal to raise the boom of a mobile crane?

A. Flat hand raisedB. Thumb up, clenched fistC. Index finger pointing upD. Two hands, thumbs pointing towards each other, clenched fists

Correct answer: D

Q12. Ropes, slings and chains must be tested.

A. Every 14 monthsB. Every 12 monthsC. Every 6 monthsD. Every 18 months

Correct answer: B

Q13. Weight is constant. True or false?

A. TRUEB. FALSEC. SometimesD. Weight is the same as density

Correct answer: B

Q14. In conditions where the wind speed will exceed the specifications of the lifting plan or crane specification what action should the crane operator take?

A. Only lift loads using chains as these are the strongest type of slingB. Ensure that the rigger uses double choke hitchesC. Not conduct the liftD. Ensure that the rigger applies tag lines so that assistants can stabilise the load

Correct answer: C

Q15. Adherence to Load plans is solely the responsibility of the Appointed Person.

A. TRUEB. False, it is the responsibility of all persons involved in the liftC. It does not matter because load plans are not of much useD. False, it is the crane supplier's job

Correct answer: B

Q16. Which of the following is the correct definition for mass?

A. It's another word for weightB. The amount of matter that makes up an objectC. How tightly packed together the matter that makes up an object isD. The effect of gravity on an object

Correct answer: B

Q17. What precautions must the crane operator take regarding lifting area security?

A. As long as people are wearing the correct PPE they are allowed in the areaB. No one other than the rigger banksman is allowed in the areaC. The lifting area must be restricted to authorised lifting personnel onlyD. The lifting area can be entered if they are site employees

Correct answer: C

Q18. Where should the hook be positioned in relation to the load?

A. Directly above the centre of the loadB. Directly above the centre of gravity of the loadC. Anywhere it can be securedD. To one side and central

Correct answer: B

Q19. When using a specifically designed personnel carrier what precautions must the crane operator take?

A. Ensure that the persons to be lifted are qualified rigger banksmanB. Only lift when the wind speed is below 5 km/hC. Only lift one person at a timeD. They must follow the explicit information provided on the specific method statement written for the lift

Correct answer: D

Q20. Ideally, how should slings and lifting accessories be stored?

A. In the supervisor's officeB. Hung up in a secure, dry facilityC. It's not the slinger's responsibilityD. On the crane hook

Correct answer: B

Part B — Open Questions

Open Q1. List 2 precautions that as an operator, you should take before a slinger starts attaching or disconnecting their slings when working?

Suggested assessor answer: Stop/secure the crane and keep the hook/load under control; ensure clear communication and prevent unexpected crane movement.

Open Q2. Name 4 different types of lifting accessory

Suggested assessor answer: Wire-rope slings; web/round slings; chain slings; shackles.

Open Q3. Name 8 essential items listed on a lifting plan

Suggested assessor answer: Load weight; load dimensions/centre of gravity; lifting points; crane type/capacity; crane position and radius; ground/outrigger conditions; lifting route/exclusion zone; hazards/clearances and communications.

Open Q4. The siting of the Mobile Crane should take account of many safety factors that might affect its safe operation (name 4)?

Suggested assessor answer: Ground bearing/stability; overhead power lines/obstructions; excavations or underground services; access, clearances and other site obstructions.

Open Q5. Name 2 effects on the load when a crane operator slews too quickly.

Suggested assessor answer: Load swing; excessive dynamic/side-loading forces.

Open Q6. State the action that the operator must take if they have not accurately understood the instructions given by a slinger.

Suggested assessor answer: Stop the operation and obtain clarification before continuing.

Open Q7. When is it acceptable to override a mobile crane's Rated Capacity Indicator (RCI) and when must it NEVER be overridden?

Suggested assessor answer: Only when specifically permitted by the manufacturer/approved procedure for a controlled function; never to bypass protection or exceed rated capacity/safe limits.

Open Q8. Name 2 types of communication systems that can be used when working with slingers?

Suggested assessor answer: Hand signals and radio communication.

Open Q9. Describe gross and net weight.

Suggested assessor answer: Gross weight is the total weight including packaging/container. Net weight is the weight of the load/content excluding packaging/container.