Introduction to Mobile Cranes Practice Test

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• Wheeled truck crane on tires margin of stability is?
• As the load comes out of the water, loading on the crane will:
• What factor is used to determine the size of the block under outriggers?
• How do wind effects differ for lattice boom cranes versus telescopic cranes?
• Which statement about OSHA certificate validity is correct?
• What should the operator do during setup if all the outriggers are not visible?
• What action should be taken if wear or damage is observed on the load hook or chain?
• For load rating to apply, what must be true about the ground?
• The NCCER Mobile Crane Operator Certification Program has been accredited by which organization?
• When is it allowed to hoist personnel?
• The platform and rigging must be proof tested at what percentage and for how long?
• When making a lift the center of gravity of the load should be_____________.
• Which safety feature protects workers from rotating gears or chains on a crane?
• Why are sheave bearing wear and lubrication important to monitor, and what symptoms indicate problems?
• Where do carrier-mounted cranes typically achieve their maximum lifting capacity?
• In which position do crawler cranes apply the least amount of pressure?
• Manufacturers reduced shipping loads on outriggers_________on rubber__________.
• Which of the following is not a direct factor in crane stability?
• When are certified rigging calculations or load cells recommended?
• Why is clear radio communication essential during lifts, and what practices improve it?
• Multi crane lifts require how many signal person(s) and require rating deduction of what percent?
• Crane idle for one month but less than six months should be given what type of inspection?
• Which factor is a primary determinant for load chart validity?
• When power line contact occurs, what is the recommended action?
• The margin of stability values (85% on outriggers and 75% on tires) apply to which type of crane?
• Side loading during load movement is permitted only with a freely suspended load.
• Which term describes a crane with rotating controls?
• During a lift, what is the preferred path for the load to minimize risk to workers and equipment?
• What safety feature must be in place on rotating gears or chains under normal operating function?
• Which practice reduces wear on wire rope?
• What is hook clearance and why is it important during lift planning?
• What wind limits are typically considered for mobile crane operations, and how do you verify acceptable conditions?
• Why is grounding or bonding with electrical loads critical when near energized lines?
• In lift operations, who can address concerns and restart the lift after addressing safety?
• Blocking should be at least how many times the surface area of the outrigger pad?
• How is the swing radius danger zone established and communicated on site?
• Which devices are required to lift personnel?
• What is the only allowable side loading of the boom?
• Most load chart ratings require the crane to be_________.
• If the visibility of outriggers is not clear, which role should coordinate signaling?
• The Boom Angel Indicator is a device required to lift personnel.
• Generally overloading can cause which types of failures?
• Why should you retract outriggers before moving a mobile crane?
• The trial lift run is required in which scenarios?
• What is the role of tag lines during lifts near workers?
• What is the purpose of a load chart in crane operations?
• Which statement correctly describes the repair windows for Category 1 and Category 2 operational aids?
• This inspection covers the same as frequent but must be documented:
• How does an anti-two-block device function and what are common types?
• How can the wind blowing against the load affect the crane?
• Which of the following best describes the role of the Lift Director in lift operations?
• What are the three basic types of cranes?
• What standard hand and voice signals are commonly required during crane operations, and who should give them?
• Wheeled truck crane on outriggers margin of stability is?
• The operator's version of the communication device must be hands free.
• If the load is lifted too fast it will
• What are the two main standards that cover mobile cranes?
• Proof tests can be conducted in conjunction with rail lifts.
• What effect does the jib angle offset have on the crane capacity?
• What are signs of damaged or worn wire rope, and when should it be removed from service?
• What steps are involved in reporting and documenting crane-related accidents or near-misses?
• How should telescopic boom sections be extended?
• If a mobile crane contacts a power line, what should the operator do?
• What is the function of sheaves and how do worn sheaves affect lifting operations?
• What is the maximum percentage of the crane's rated capacity allowed when lifting personnel?
• What should be done to avoid overhead hazards during crane operation near power lines?
• What is the typical maintenance schedule frequency for mobile cranes and what tasks are included?
• What risk arises if a bearing surface sinks due to improper support?
• Duty cycle is the term used for which operation?
• When is the use of mats or cribbing typically required?
• If any safety device fails to operate properly, lift operation must be ________.
• What is the primary purpose of establishing an exclusion zone around crane operations?
• How can telematics and load monitoring systems improve crane operation safety?
• Crane with rotating controls ______. Crane with stationary controls _______.
• What are common travel restrictions for mobile cranes, and how do you plan around them?
• What is the importance of a lift plan sign-off and who should approve it?
• When wind is directed toward the load, what effects can occur?
• Why is recording a crane's maintenance and inspection history important?
• What maintenance steps are taken for the crane's hook block?
• What measures should be taken when lifting loads over or near workers?
• Water temperature is a factor to consider in a submerged lift.
• What is the purpose of a set-up diagram in crane operations?
• What is the function of the crane trolley on a mobile crane?
• What is anti-two block and why is it critical to crane safety?
• OSHA requires clearance of ______ when voltage is unknown up to 350 kV.
• Two-blocking alarms sounds during operation: what action should be taken?
• What section of the crane is required to be barricaded?
• What is the primary difference between a telescopic mobile crane and a lattice boom mobile crane in terms of boom extension and speed?
• Tag must be removed by who?
• In lifting operations, what is the role of a dedicated signal person, and when is it required?
• What device provides direct weight reading for the load during lifting operations?
• For multi crane lifts, the required number of signal persons is one and the deduction is 25%. Which option matches?
• What factors determine the appropriate size and placement of cribbing and mats under outriggers?
• How do you determine the maximum allowable load for a given boom length and radius using the load chart?
• OSHA requires clearance of ______ when voltage is up to 50 kV.
• Whose guidance should be consulted for wind-related operating conditions?
• Which device can be used to estimate the weight of a load being lifted?
• To lift personnel, the crane must be level within what percent and not exceed what percent of rating?
• Blocking can be placed under outrigger beam.
• Blocking under outrigger beam is allowed.
• Most carrier mounted cranes have their greatest capacity___________.
• All of the following are reasons for stopping personnel lift operations except?
• Which device helps control rotation and prevent sudden moves during lift operations?
• What must the ground conditions be for the load rating to apply?
• How should outriggers be positioned to maintain stability during a lift?
• Which device is designed to measure load force during crane lifting?
• Who has authority to restart operations after an interruption due to contact with power lines?
• Crawler Cranes are named for their slow moving tracks called crawler frames or _________.
• What is the purpose of consulting the lift plan and load chart before a lift?
• How should load weight be verified for irregularly shaped objects?
• When blocking is needed under outriggers, what determines the size of the block?
• Crane's working Circle based on booms position in relation to carrier body_______________.
• As offset angle increases, capacity and strength of the jib:
• What is the most common cause of fatalities during crane operations?
• In crane terminology, which term describes the extension of the main boom?
• In hydraulic crane operations, what component prevents the extension from retracting after deployment?
• When traveling with a load, how should the crane's boom and the load be positioned?
• True or False: Certified operators must take only the written assessment again every 5 years to retain their certificate.
• What is the purpose of outriggers on a mobile crane, and what conditions must be checked before deployment?
• What guideline must be followed when operating a crane near power lines?
• The first concern of the crane operator should always be what?
• The effect on a crane when the load starts and stops is called?
• This inspection is conducted in a service environment:
• Which scenario indicates the use of a signal person?
• Once the activity is stopped for any reason, only the ______ can restart it.
• Side loading is a major cause of_____________.
• What should you do if you suspect brake failure during operation?
• Before operating a crane, if the operator is not familiar with it, what should be ensured?
• What ground surface would be least adequate for machine set-up?
• In submerged lifts, water temperature is not a factor to consider.
• On a hydraulic crane, which item prevents the extended section from retracting unexpectedly?
• Which of the following is NOT one of the three basic crane types?
• Blocking under rigging pads is determined by which factors?
• A device that provides a reading of payload weight during hoisting is called a
• Is lifting personnel allowed at any time?
• Which pair of percentages is used to indicate reduced shipping loads on outriggers in different conditions?
• Which statement best describes the inspection requirement for equipment idled more than six months?
• What is the purpose of documenting an accident as an incident report?
• What is the purpose of a chaser vehicle during crane lift operations?
• Which device helps prevent two-blocking during lifting?
• For outriggers, what should be done with weight on tires during operation?
• Ground pressure is greatest on crawlers when the boom is in which position?
• Which option describes a test that can indicate unsuitable ground for crane setup?
• Which instrument is most directly used to estimate weight of a lifted load?
• In the event of a safety device failure, what is the required action for the lift operation?
• What actions should be taken in case of an emergency during a lift?
• How does the crane's duty cycle or weight rating differ from its maximum load rating?
• Which action helps ensure safe signaling before moving a load over a new path?
• Which organization sets minimum clearance distances around energized lines for construction equipment?
• What steps should be taken if a planned lift appears to exceed the crane's rated capacity?
• During load movement, side loading is permitted only with which condition?
• What should an operator do if he is worried about the safety of the operation of the crane?
• If counterweight is reduced below the recommended level, what is the primary risk?
• Which device is used to measure load weight during lifting?
• What is the purpose of tag lines in mobile crane operations, and how many are typically used?
• High speed continuous operation is called what and requires what rating deduction?
• If communication is disrupted, what must happen?
• What minimum qualifications or training are typically required for mobile crane operators?
• What does LMI stand for in crane equipment?
• How are crane brakes tested during operation, and what are warning signs of brake failure?
• What happens in cold weather and what precautions should be taken for mobile cranes?
• Regarding outriggers, blocking should be at least how many times the surface area of the outrigger pad?
• Who can give operators stop or emergency stop signal?
• Category 1 operational aids must be repaired within 7 days, and Category 2 within 30 days.
• If all the outriggers on a crane are not visible during setup, what should be done?
• The Boom Hoist Limiting Device is a device required to lift personnel.
• Overhead power lines must always be considered energized until __________.
• In many cases when wind speed exceeds ______ mph it is advisable to stop operations
• Dynamic loading refers to the crane effect when the load starts and stops.
• Which statement best describes wind limits for lattice vs telescopic cranes?
• Which factors influence whether leveling is possible during crane setup?
• During daily crane inspections, which tasks are typically performed?
• What items are typically checked during a daily crane inspection before operation?
• Lifting personnel is not allowed on rubber.
• Equipment idle for more than 6 months requires what type of inspection?
• In mobile crane terminology, what is a jib?
• What is the lower section of the boom that doesn't extend?
• An operator must obey an audible stop or an emergency stop signal when given by who?
• If an operator is not familiar with a crane, what should he do?
• An accessible fire extinguisher of which rating is required on equipment?
• If a 1'x1'x1/4" piece of concrete weighs 10 lbs, how much does a 4'x20'x1' slab weigh?
• Which rigging configuration is typically used to lift a load that requires multiple attachment points to distribute weight?
• Name the main load path components from hook to the crane base in a typical mobile crane.
• When might you need to disable a portion of the outriggers or use partial outriggers, and what are hazards?
• Where is the area that must be barricaded around a crane during operation?
• What is a consequence of lifting a load too fast?
• On a hydraulic crane what keeps the manual extension from retracting after it's extended?
• How should soil bearing capacity and surface conditions influence crane set-up?
• The slab weighed 3,200 lbs according to the source; which statement reflects that?
• After an emergency incident, which action is essential for safety documentation?
• Which factors determine the choice of rigging method and equipment for a lift?
• True or False: Exit crane with normal 3-point contact when contact with power line is made.
• What is the purpose of barriers and spotters when operating near power lines?
• In terms of stability, which configuration yields a greater margin of safety for a wheeled truck crane?
• What are the essential elements of a pre-lift planning checklist for a mobile crane lift?
• What can happen to a crane when side loading occurs?
• Under OSHA requirements, a crane operator certificate is valid for how many years?
• How are exclusion zones around crane operations typically marked, and who may access?
• What is the effect of luffing the boom on load capacity and stability?
• What is the distinct feature of mobile cranes?
• What steps should be taken when parking and storing a mobile crane after use?
• How is the load path used in lift planning?
• Who should be briefed about the swing radius danger zone on a lifting operation?
• Crane operators should follow______________ guidance related to wind.
• What should an operator do before swinging in the load?
• Before swinging, operators should use which method to alert nearby personnel?
• Before swinging the load, the operator should:
• What is the purpose of cribbing and mats under crane outriggers, and how do you select proper size?
• The inspection described as being conducted in a service environment is annual or periodic.
• Anti-Two-Blocking Devices are a device required to lift personnel.
• When must trail lift be made?
• When must a trial lift run be made?
• OSHA requires clearance of ______ when voltage is unknown over 350 kV.
• Which of the following describes the typical quarterly or annual service interval for mobile cranes?
• If not properly supported, one of these bearing surfaces can sink, allowing crane to lift away from level. What should the operator do?
• If the operator has doubt as to the safety of the lift, what should they do and who should they report to?
• A crane's tires should be checked for__________.
• What should you do when outriggers must be placed on soft ground?
• Is it permissible to hoist personnel with a mobile crane while the crane is on a public road?
• If the jib angle offset reduces capacity, which statement is true?
• What determines the size of the blocking when blocking under the rigging pads are required?
• What are common rigging configurations used with a mobile crane, and what factors influence the choice?
• What term describes the division of the crane's working space into four sectors?