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NCCO CORE ACTUAL EXAM 425
QUESTIONS WITH VERIFIED
ANSWERS 100% CORRECT ANSWERS
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"How does the operator verify the LMI's boom length or load radius reading? a) Actual measurements b) No need to verify c) Calibrate the LMI d) Check with superintendent - CORRECT ANSWER=> A) actual measurements" "If the rated capacity of the crane is above the solid line or within the shaded areas or has an asterisk next to it, this means the capacity is based on: a) 75% of structural competence b) Structural competence c) 85% of tipping d) tipping - CORRECT ANSWER=> B) structural competence" "All hazards and potential problems should be discovered during the: a) Pre-lift site inspection b) Actual lift operation c) Daily safety meeting d) Coffee break - CORRECT ANSWER=> A) pre-lift site inspection" "How many broken wires must be present in one strand of one lay for running wire rope to be removed from service? a) 3 b) 4 c) 2 d) 6 - CORRECT ANSWER=> A) 3"
"In a range diagram, boom length and angle can be used to determine: a) Load weight b) Load radius c) Counterweight requirements d) Net capacity - CORRECT ANSWER=> B) load radius" "When making a multiple crane lift it is important for the operator to understand that: a) The weight is equally distributed at all times b) The weight is never equally distributed c) The weight may increase if the other crane lands the load d) The weight may decrease if the other crane lands on the load - CORRECT ANSWER=> c) The weight may increase if the other crane lands the load" "If a crane is not set up level and the operator swings a load from the high side to the low side, the load radius will: a) Decrease b) Stay the same c) Increase two feet for every one degree out of level d) Increase - CORRECT ANSWER=> D) increase" "Most crane manufacturers reduce load capacity for duty-cycle operations because: a) The Maximum load is almost always known b) Dynamic loads are not encountered c) Side loading forced may occur d) The outward swing of the load decrease the load radius - CORRECT ANSWER=> C) side loading forced may occur" "On whose recommendation should a preventative maintenance program be setup? a) Master Mechanic b) Crane operator c) Company supervisor d) Crane manufacturer - CORRECT ANSWER=> D) crane manufacturer" "What is the standard rope used on most cranes? a) Right regular lay b) Right alternate lay c) Left regular lay
b) you are handling light loads c) the main boom is being lifted d) there is a load chart for this operation. - CORRECT ANSWER=> D) there is a load chart for this operation" "When lifting loads from the water, the operator should be aware that: a) the current can change and cause the crane to tip b) the brakes on the crane could get wet and slip c) a dynamic load can occur d) the load will increase when you pick the load from the water - CORRECT ANSWER=> d) the load will increase when you pick the load from the water" "What is required to be on a Hydraulic Crane in order for it to lift a man basket? a) Boom length indicator b) Radio communication c) Free fall capability d) Two operators - CORRECT ANSWER=> A) boom length indicator" "When working on rubber, cranes are rated at what percentage of tipping? a) 70% b) 75% c) 80% d) 85% - CORRECT ANSWER=> B) 75%" "When using cable or nylon straps it is important to remember: a) The strap angle does not affect tension b) The lower the strap angle the greater the tension c) The higher the strap angle the greater the tension d) The lower the strap angle the lesser the tension - CORRECT ANSWER=> B) the lower the strap angle the greater the tension" "Backward stability of a crane is tested with: a) Basic boom at maximum angle with maximum load b) Maximum boom at maximum angle with maximum load c) Basic boom at minimum angle with no load d) Basic boom at maximum angle with no load - CORRECT ANSWER=> D) basic boom at maximum angle with no load"
"If not listed in the load/capacity charts for a hydraulic crane and you are in between boom lengths, you should: a) use the next longer length b) use the next shorter length c) use the length closest to the actual length d) use the range diagram - CORRECT ANSWER=> A) use the next lounger length" "When a spinning load presents a danger, the operator should: a) keep the load close to the ground b) run load to the tip of boom c) tell everybody to stay clear d) use a tagline - CORRECT ANSWER=> D) use a tagline" "Parts of line means: a) the amount strands in the load line b) the number of sheaves in the load block c) the number of vertical lines running between the load block and boom tip d) the number of load lines on the crane - CORRECT ANSWER=> c) the number of vertical lines running between the load block and boom tip" "If a jib is erected but not used, it is treated as a deduction from the cranes: a) gross capacity b) boom lengths c) swing radius d) net capacity - CORRECT ANSWER=> A) gross capacity" "What is the maximum number of broken wires acceptable before replacement on a standing wire rope between the end sockets in one lay? a) 2 b) 6 c) 1 d) 4 - CORRECT ANSWER=> A) 2" "What are most jibs capacities based on? a) Working radius b) Main boom length c) Tipping d) Structural - CORRECT ANSWER=> D) structural"
d) 15 minutes - CORRECT ANSWER=> 5 minutes" "When given verbal instructions, the first part of the instruction should be: a) Stop. b) Direction of travel. c) Function d) Radio Identifier. - CORRECT ANSWER=> C) function" "Seat belts shall be provided on what cranes? a) Lattice truck cranes b) Hydraulic truck cranes c) Cherry pickers d) Lattice crawlers - CORRECT ANSWER=> C) cherry pickers" "Power is transferred to the swing through a: a) pinion gear b) bevel gear c) transmission d) torque converter - CORRECT ANSWER=> A) pinion gear" "LMIs shall be installed on cranes with a lifting capacity of: a) 3 tons and above b) 5 ton and above c) 10 ton and above d) 15 ton and above - CORRECT ANSWER=> A) 3 tons and above" "When lifting personnel the cranes hook must be the type that: a) can be closed and locked b) is an open throat hook c) have a spring loaded non-locking latch d) has a double locking latch - CORRECT ANSWER=> A) can be closed and locked" "When working over water with a man basket are the people inside required to wear a belt / harness? a) No harness or belt required b) Belt harness is always required c) Seat belts are acceptable d) Only when the supervisor requires it - CORRECT ANSWER=> A) no harness or belt required"
"When given verbal instructions, the last part of the instruction should be: a) Function. b) Direction of travel. c) Stop. d) Radio Identifier. - CORRECT ANSWER=> C) stop" "When working near power lines, where should caution stickers be installed? a) On carrier and on the barriers b) On barriers and on crane boom c) At operators station and on the outside of the crane d) At operators station and on the barriers - CORRECT ANSWER=> C) at operators station and on the outside of the crane" "Jib backlash how much? a) 10 degrees b) 15 degrees c) 5 degrees d) 0 degrees - CORRECT ANSWER=> C) 5 degrees" "Cranes must be level to within ___% grade. a) 3% b) 2% c) 5% d) 1% - CORRECT ANSWER=> D) 1%" "A frequent inspection is: a) Monthly to annually b) Daily to monthly c) Hourly to daily d) Daily to weekly - CORRECT ANSWER=> B) daily to monthly" "A periodic inspection is: a) Monthly to annually b) Daily to monthly c) Hourly to daily d) Daily to weekly - CORRECT ANSWER=> A) monthly to annually"
b) Jib angle to the ground c) Jib angle to vertical d) Jib Angle to horizontal - CORRECT ANSWER=> A) jib angle to the boom" "The crane is out of level, you release the swing brake, and the boom swings downhill, your: a) boom angle stays the same b) boom angle increases c) load radius stays the same d) load radius increases - CORRECT ANSWER=> D) load radius increases" "When placing timbers under outriggers, they should be: a) run parallel to the outrigger beams b) run perpendicular to the outrigger beams c) no less then 8" x 8" d) railroad ties - CORRECT ANSWER=> A) run parallel to the outrigger beams" "What quadrant produces the least amount of ground pressure on a mobile truck crane: a) corner b) side c) front d) rear - CORRECT ANSWER=> B) side" "Rotation resistant wire rope can be used with a swivel: a) only if the wire rope manufacturer approves it. b) always c) never d) if the operator okays it - CORRECT ANSWER=> A) only if the wire rope manufacture approves it" "Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect? a) Overheating the swing brake b) Overturning the crane or collapsing the boom c) Increased pressure on the crane's draw works d) Rope vibration - CORRECT ANSWER=> B) overturning the crane or collapsing" "When the boom handle is released to its center position, which action should be expected? a) The boom hoist safety pawl will be automatically disengaged b) The boom hoist will be held stationary
c) The swing brake will be automatically applied d) The load hoist drum will freewheel until the hoist brake is engaged - CORRECT ANSWER=> B) the boom hoist will be held stationary" "On a telescopic boom, the main boom length is measured from the: a) end of the boom section to the center tip of the head section b) ground to top of head section c) center of the boom hinge pin to the center of the boom tip sheave d) crane's center of rotation to the center of the sheave on the boom head - CORRECT ANSWER=> c) center of the boom hinge pin to the center of the boom tip sheave" ". If you can't level your crawler crane: a) don't operate crane b) reduce capacity 50% c) operate only on high side d) operate only on low side - CORRECT ANSWER=> A) don't operate crane" "What effects does having the outriggers retracted have on a mobile truck crane with a long boom? a) Decrease track wear b) Decrease in capacity c) Increase in capacity d) Increase track wear - CORRECT ANSWER=> B) decrease in capacity" "If your mobile crane is on a barge, it is necessary to: a) reduce the load chart by 60% b) reduce the chart by 40% c) call maritime inspector d) secure the crane to the barge - CORRECT ANSWER=> D) secure the crane to the barge" "A basket hitch is what percentage of a vertical hitch's capacity? a) 100% b) 50% c) 200% d) 85% - CORRECT ANSWER=> C) 200%" "When using a mobile crane on a barge, the crane's load capacity chart shall be: a) replaced by a list chart b) de-rated to 40%
d) The boom is kept 10 ft away from power line - CORRECT ANSWER=> b) The load nor any part of the crane can come closer than regulations allow" "On a telescopic boom, the boom angle is measured between the centerline of the: a) loaded boom and the horizontal b) unloaded boom and the horizontal c) loaded boom and the vertical d) unloaded boom and the carrier deck - CORRECT ANSWER=> A) loaded boom and the horizontal" "When a mobile truck crane is lifting on outriggers, the floats or pads should always be: a) Large enough to support two times the applied load. b) With the tires firmly on the ground. c) Secured to the outriggers d) Placed on mats. - CORRECT ANSWER=> C) secured to the outriggers" "Hydraulic valves that supply the outriggers shall be the type: a) holds in case of high winds b) holds in case of the crane is tipping and resting on the tipping axis outriggers c) holds in case of a hose break or failure d) holds the float tight to the jack. - CORRECT ANSWER=> C) holds in case of a hose break or failure" "It is illegal to fly oxy / acetylene bottles with: a) the caps on & regulators off b) the caps off & regulators on c) each other d) a tag line. - CORRECT ANSWER=> B) the caps off & regulators on" "Which of the following is the strongest 2 point pick? a) Both off the main b) Off the main and an auxiliary head c) Off the main and the jib d) Over the front & over the rear - CORRECT ANSWER=> A) both off the main" "When you change the jib offset angle from 15° to 5° you have: a) decreased the head clearance b) increased jib gantry angle
c) shortened the forestay pendants d) increased the capacity of the jib - CORRECT ANSWER=> D) increased the capacity of the jib" "A truck crane operating with outriggers fully extended and set, does not have a fifth front outrigger, the operator should: a) use higher boom angles over the front b) refer to the manufacturers working area diagram c) block under the bumper to provide more stability d) only operate over the front at a 50° reduction of the load chart - CORRECT ANSWER=> B) refer to the manufactures working area diagram" "According to OSHA, which do you check prior to crane operations? a) Exhaust systems b) Ground conditions c) Vehicle brakes d) Hydraulic valves - CORRECT ANSWER=> B) ground conditions" "What type of weight is the crane's jib when it is erected? a) Actual b) Deduction c) Effective d) Net - CORRECT ANSWER=> C) effective" "When a lattice boom truck crane is operating on properly set outriggers, the tipping axis is located at the: a) radius of the counterweights b) center pin of the crane c) boom heel pins d) point where the outriggers touch the ground - CORRECT ANSWER=> D) point where the outriggers touch the ground" "The purpose of placing mats or cribbing under outrigger floats is to: a) get the tires off the ground b) distribute the downward force of the float over a larger area c) allow the float to be level d) raise the operators cab for better vision - CORRECT ANSWER=> B) distribute the downward force of the float over a larger area"
"Blocking which is not tightly placed may fail at: a) 25% of design b) 30% of design c) 50% of design d) 80% of design - CORRECT ANSWER=> C) 50% of design" "If the jib is offset, the crane's capacity will: a) be increased b) be reduced c) not change d) not change because the jib cannot be offset - CORRECT ANSWER=> B) be reduced" "The safest speed for a crane carrying a load is: a) the manufacturer's speed limit b) the job site's speed limit c) the speed recommended by the superintendent d) the speed recommended by the oiler - CORRECT ANSWER=> A) the manufacturer's speed limit" "The boom angle indicator indicates: a) gross capacity b) angle of boom to horizontal c) angle of boom to vertical d) net capacity - CORRECT ANSWER=> B) angle or boom to horizontal" "When performing a pick and carry lift with a rough-terrain hydraulic crane, which of the following is the most important consideration? a) Ensuring that at least two hand held tag lines are used. b) Moving away from the load to avoid load contact with the crane c) Keeping the boom as low as possible with the load close to the ground d) Keeping the load above the eye level for visibility - CORRECT ANSWER=> C) keeping the boom as low as possible with the load close to the ground" "Jib offset is the jib angle to the: a) Ground b) Vertical c) Horizontal
d) boom - CORRECT ANSWER=> D) boom" "According to ASME B30.5 the prohibited zone for power lines that are 60kV, is: a) 10ft b) 12ft c) 15ft d) 20ft - CORRECT ANSWER=> C) 15ft" "How many broken wires at an end socket of a standing wire rope are allowed before the wire rope must be replaced? a) 1 b) 2 c) 3 d) 6 - CORRECT ANSWER=> A) 1" "When operating a mobile crane, you inspect your running wire rope at least: a) daily b) weekly c) monthly d) yearly - CORRECT ANSWER=> C) monthly" "Rotation resistant wire rope has a design factor of: a) 2.5 to 1 b) 3 to 1 c) 3.5 to 1 d) 5 to 1 - CORRECT ANSWER=> D) 5 to 1" "Line pull is: a) the amount of weight a drum will hoist for a given layer b) the amount of weight required to pull the line off a drum c) the amount of tension required to initially install rope on a drum d) the amount of wire rope necessary to fill a drum - CORRECT ANSWER=> a) the amount of weight a drum will hoist for a given layer" "The length of a telescopic boom is measured from the: a) Center of the hinge pin to the center of the head sheave pins b) End of the heel section to the tip of the sheaves c) Center of the heel section to the center of the head section
b) use range diagram c) use a tape measure d) look at the LMI - CORRECT ANSWER=> B) use range diagram" "When determining what position to dog the machine over night and high winds are expected: a) Tie off to the closest solid structure into the wind b) Tie off to the closest solid structure with the wind to your back c) Put the crane in a free wheel situation d) Follow the manufacturer's recommendations - CORRECT ANSWER=> D) follow the manufactures recommendations" "Increasing the distance from the crane's center of gravity and the tipping axis will: a) Increase stability b) Decrease stability c) Increase structural competence d) Decrease structural competence - CORRECT ANSWER=> A) increase stability" "What type of weight is the crane's jib when it is erected? a) Actual b) Effective c) Deduction d) Net - CORRECT ANSWER=> B) effective" "A crane's ground pressure can approach a weight that is: a) 30% of the weight of the crane and the suspended load b) 50% of the weight of the crane and the suspended load c) 40% of the weight of the crane and the suspended load d) 100% of the weight of the crane and the suspended load - CORRECT ANSWER=> D) 100% of the weight of the crane and the suspended load" "Operating a crane with a long boom, on uneven ground, you should: a) Block under the beam b) Block under the pad and keep a 75° angle between the cylinder rod and the pad d) Block under the pad regardless of the angle c) Block under the pad and keep a 90° angle between the cylinder rod and the pad - CORRECT ANSWER=> C) block under the pad and keep a 90 angle between the cylinder rod and the pad"
"On a hydraulic truck crane that has all five outriggers properly positioned on firm supporting surfaces, the working area diagram from the load capacity chart will indicate that the "over the front" area is: a) Either side of the crane center line by 10 degrees b) Between the tire treads of the crane c) Different depending on the crane manufacturer's definition and determination d) Forward of a straight line perpendicular to the crane sides through the center of rotation - CORRECT ANSWER=> " "An operator performing a pick and carry operation with a rough terrain crane should keep the load: a) secured to the carrier b) positioned over the rear of the carrier c) positioned over the front of the carrier d) positioned 18 inches off the ground - CORRECT ANSWER=> C) positioned over the front of the carrier" "A telescopic crane is going to lift a personnel platform, what is required? a) Boom length indicator b) Rotation resistant wire rope c) Equipped with a radio d) Anti-two-block warning system - CORRECT ANSWER=> A) boom length indicator" "Before making a near capacity lift with a crane, the operator must: a) adjust the hydraulic pressure up 5% to prevent slippage b) make a test lift over the best lifting quadrant c) test the hoist brakes by lifting the load a few inches and holding d) ensure the rigger knows the intended radius - CORRECT ANSWER=> C) test the hoist brakes by lifting the load a few inches and holding" "A stationary load is: a) symmetrical b) dynamic c) static d) gross - CORRECT ANSWER=> C) static" "The effective weight of the fly/jib when erected from the stowed position: a) increases b) is reduced by 75%
