NCCCO Test 3 Questions with Correct Answers

NCCCO Test 3 Questions with Correct Answers The crane is out of level, you release the swing break, the boom swings downhill, your: - Answer-Load radius increases Blocking can be placed under the ends of tracks to: - Answer-Increase the cranes stability when Operating over front or back What quadrant produces the least amount of ground pressure on a lattice crawler: - Answer-Side On lattice boom crane's fitted with power load Lowering , a heavy load should be lowered by using the: - Answer-Power Load-lowering feature and the foot break Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect? - Answer-Overturning the crane or collapsing the boom When the boom handle is released to it center position, which action should be expected? - Answer-The boom hoist will be held stationary On a lattice boom crawler crane, the main boom length is measured from the: - Answer- Center of the boom heal pins to the center of the boom tip sheave You can't level your crawler crane: - Answer-Don't operate crane What affect does having the crawlers retracted have on a crawler crane with a long boom? - Answer-Decrease in capacity Your crawler crane is on a barge, it is necessary to: - Answer-Secure the crane to the barge A pin connected lattice boom is being dismantled. After connecting the equalizer (bridal) to the connecting lugs on the boom, which boom connecting pins should be removed first? - Answer-Lower connecting pins, located at and ahead of the equalizer When using a mobile crane on a barge, the cranes load capacity chart shall be: - Answer-Replaced by a list chart How many broken wires are permitted at the end connection of a pendant before it must be taken out of service? - Answer-1 If high winds are expected and the lattice boom crane must be secured pointing into the wind, then the hook should be: - Answer-Secured to a solid structure directly below the boom point. When assembling a lattice boom on most crawler cranes using inserts of different lengths, which insert section generally should be closest to the boom foot? - Answer- 10ft During assembly where should you attach slings to lift boom sections? - Answer-End fittings Which boom configuration can cause the most hazardous boom side-loading condition? - Answer-Long boom with a minimum radius When is it safe to handle loads under power lines? - Answer-The load nor any part of the crane can come closer than regulations allow On a lattice boom truck crane, boom angle is measured between the centerline of the: - Answer-Loaded boom and the horizontal When a lattice boom truck crane is lifting on outriggers, the floats or pad should always be: - Answer-Secured to the outriggers Manufacturer specifications permit only a certain amount of boom to be suspended out past the connection point of the pendants during assembly or disassembly of the boom. The portion of boom that is suspended in this way is called the: - Answer-Cantilever length When lattice boom is being disassembled or shortened, it is extremely important to: - Answer-Never touch any pin on any boom section located between pendent attachment points and the crane When installing a pin-connected lattice boom on a mobile crane you should always: - Answer-Use the boom hoist Pawl to hold the boom When you change the jib to ground angle from 40° to 30° you have: - Answer- Decreased the capacity of the jib A lattice boom truck crane with 120 foot boom will be operating at a 42 foot radius.The load chart shows an entry indicating 25,000 pounds at a 40 foot radius, followed immediately by an entry listing 20,000 pounds at a 45 foot radius.What is the cranes capacity of the 42 foot radius? - Answer-20,000 pounds A truck crane operating with outriggers fully extended and set does not have a fifth front outrigger,the operator should: - Answer-Refer to the manufacturers working area diagram A crane that climbs a 7% grade, 1 mile hill should descend down the hill in : - Answer- Either fourth or fifth gear A lattice boom truck crane, when set up out of level, will lose the most capacity with? - Answer-Long boom short radius A device that automatically stops the boom when it nears the maximum angle is the: - Answer-Boom hoist kick-out When a lattice boom truck crane is operating on properly set outriggers, the tipping access is located at the: - Answer-Point where the outriggers touch the ground The purpose of placing mats or cribbing under outrigger floats is to: - Answer-Distribute the downward force of the float over a larger area A crane loses stability when it's leverage on the load is - Answer-Less than the loads leverage on the crane If a lattice boom truck crane is going to perform work over the front it must have: - Answer-A front-mounted outrigger Each outrigger pad and it's blocking should be sufficient to support: - Answer-The total weight of the crane and it's a load How does high wind affect the set up of a crane with a long boom? - Answer-Introduces side load onto the boom When a lattice boom truck crane that is properly set up with no front outrigger and the boom is positioned over the front, the combine center of gravity of the carrier and upper works will move: - Answer-Closer to the axis