NCCCO Core Sample Test Question & Answers 100% Accurate, Exams of Engineering

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NCCCO Core Sample Test Question & Answers 100%

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A frequent inspection is: - ANSWERDaily to monthly

1. What action does a signal person intend the operator to perform if he extends his arm at shoulder height, makes a fist with his hand, and sticks his/her thumb up? - ANSWERBoom Up (Appendix A to Subpart CC of Part 1926--Standard Hand Signals)
2. The load line of the crane you're operating contacts an energized power line. There's no sign of any other danger, such as fire. What should you do? - ANSWERStay in the cab until the lines are de- energized.
3. According to OSHA 1926.1413, how many randomly distributed broken wires in rotation-resistant rope are cause for replacement of the rope? - ANSWER2 broken wires in 6 rope diameters
4. When hoisting personnel, within what percentage of level must a telescopic boom crane be in order for the gross ratings in the load chart to remain valid? - ANSWER1% (1926.1431(c)(1) The equipment must be uniformly level, within one percent of level grade, and located on footing that a qualified person has determined to be sufficiently firm and stable.) 3
5. What is the net capacity of a crane on main boom unless the manufacturer states otherwise? - ANSWERThe capacity listed in the load chart minus the weight of the rigging and all attachments What may happen to a properly rigged load when lifted off the ground unless the operator takes account of boom deflection - ANSWERIt could swing out away from the crane Who should an operator respond to a "stop" signal from? - ANSWERAnyone

Which area do truck cranes without a 5th outrigger generally have no lifting capacity unless the manufacturer states otherwise? - ANSWERThe front What is the definition of "operating radius?" - ANSWERThe distance from the center of rotation of the crane to the center of gravity of the load What applies to the capacities below the bold line shown on a load chart? - ANSWERThey are based on the stability of the crane In which quadrant are rough terrain crane capacities generally greater? - ANSWEROver the front According to federal requirements, under what conditions is it okay for a person to ride the headache ball? - ANSWERIt is never okay By what percentage do most manufacturers require a crane's load chart capacity to be reduced by for duty cycle operations such as high-volume concrete placement? - ANSWER20% From which two points should the boom be measured? - ANSWERFrom the boom hinge pins to the center of the boom tip sheave What is the preferred method of installing wire rope from a reel onto a hoist drum? - ANSWERThe rope runs from the top of the reel to the top of the drum Over which quadrant are truck crane capacities usually greater? - ANSWEROver the rear.

18. According to OSHA, which accessible area of an operating crane must always be barricaded? - ANSWERThe swing radius of the rear of the rotating superstructure What is the OSHA regulation governing cranes in construction? - ANSWER1926. Under which circumstance is a crack in the windshield of a crane cab okay? - ANSWERAs long as it causes no visible distortion that would interfere with safe operations

Under which circumstance does OSHA permits hoisting of personnel by crane? - ANSWERAs long as there is no less hazardous or practicable way Unless the manufacturer states otherwise, what crane capacity chart is appropriate when a crane is set up with 3 of its 4 outriggers extended and the fourth is retracted? - ANSWEROn-rubber chart According to OSHA, while hoisting personnel, the total load must not exceed what percentage of the crane's rated capacity?" - ANSWER50% How should the wheels of a crane be positioned when it is set up for working on outriggers? - ANSWERJust high enough off the ground to relieve the tires of crane weight What happens to ground bearing pressure if you move a crawler crane from soft ground to harder ground? - ANSWERIt increases When is side loading of crane booms permitted? - ANSWEROnly with freely suspended loads What is indicated if an operator makes two audible signals when moving a crane? - ANSWERHe/she intends to go ahead When may blocking (cribbing) be placed under outrigger beams? - ANSWERNever What is the result of placing timber blocking under the tips of the tracks on a crawler crane? - ANSWERMakes the crane more stable According to ASME, what percentage of the manufacturer's crane rating must not be exceeded if a load test is done on a repaired crane? - ANSWER110% Where is the tipping axis of a crawler crane located? - ANSWERIt depends if the idler or sprocket are in line or offset from the track rollers What should be done with materials placed under overhead energized power lines? - ANSWERNot be lifted by crane

Where should the crane's outrigger pads or tracks be placed when working at ground floor level near a cellar wall? - ANSWERAt least as far back as the depth of the wall below ground When may a swivel be used with rotation resistant wire rope? - ANSWERIf the rope manufacturer approves What should you do on pick and carry operations? - ANSWERKeep the boom as short as possible What boom position would cause the greatest ground pressure when lifting with crawler cranes? - ANSWEROver the corner Where should the hook be positioned when preparing to hoist a light load? - ANSWERDirectly above the load's center of gravity According to OSHA 1926.1408, what minimum clearance must be maintained between any part of the crane/load and 850kV energized overhead power lines. - ANSWER45 ft. How many parts of line are required to hoist a 36,500 lb. load if the maximum allowable line pull is 9,000 lbs.? - ANSWER What determines the amount of deduction required for an erected jib that is not being used? - ANSWERThe effective weight of the jib What capacity should you use when the boom length of the crane falls between the lengths listed in the load chart? - ANSWERThe next longest or the next shortest boom length, whichever is the lower capacity When is it okay to temporarily bypass a crane's overload warning system? - ANSWERDuring assembly/disassembly operations What happens to the leverage of the load on a crane as the boom is being lowered? - ANSWERIt increases Where are the Standard Method hand signals found? - ANSWERa. OSHA Subpart CC

What should an operator do if a crane's load moment indicator (LMI) malfunctions? - ANSWERCease crane operations and report the condition to the supervisor When may a swivel be used with rotation resistant wire rope? - ANSWER When should a tagline be used - ANSWERWhen rotation of load would be dangerous 1926.1417(w)&1910.180(h)(3)(xvi) A tag or restraint line must be used if necessary to prevent rotation of the load that would be hazardous. What is the minimum design factor required for a right regular lay main, boom or auxiliary hoist rope

• ANSWER3. According to OSHA, while hoisting personnel, the total load must not exceed what percentage of the crane's rated capacity?" - ANSWER Nccco - ANSWERNCCCO NCCCO - ANSWERNCCCO The primary purpose for a rooster sheave or Auxiliary boom point sheave is to: - ANSWERSeparate the hoist lines What is the minimum allowable distance from the crane and power lines under 50k - ANSWER10 ft. When an operator leaves the crane, he must first: - ANSWERANSI B30.5-3.1.2, Put the load on the ground and put all dogs or pawls in. According to OSHA 1926.1431(k)(8)(i) personnel platform lift shouldn't be made with wind in excess of: - ANSWER20 MPH 1926.1431(k)(8)(i) Wind. When wind speed (sustained or gusts) exceeds 20 mph at the personnel platform, a qualified person must determine if, in light of the wind conditions, it is not safe to lift personnel.

When operating a crawler crane, what is the most unstable allowable quadrant of operation - ANSWERover the side How does the operator verify the LMI's boom length or load radius reading - ANSWERActual 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: - ANSWERThe crane capacities in the shaded areas above the bold lines, are based on structural strength or hydraulic limitations. The cranes capacities below the bold lines are based on stability ratings. What are the inspection criteria for running ropes where broken wires are concerned? - ANSWER1926.1413(a)(2)(ii)(A)(1) Six randomly distributed broken wires in one rope lay or three broken wires in one strand in one rope lay What are the inspection criteria for rotation resistant ropes where broken wires are concerned? - ANSWER1926.1413(a)(2)(ii)(A)(2) Two randomly distributed broken wires in six rope diameters or four randomly distributed broken wires in 30 rope diameters. What are the inspection criteria for standing or pendant ropes where broken wires are concerned? - ANSWER1926.1413(a)(2)(ii)(A)(3) More than two broken wires in one rope lay located in rope beyond end connections and/or more than one broken wire in a rope lay located at an end connection. A diameter reduction of more than ____ from nominal diameter. - ANSWER1926.1413(a)(2)(ii)(B) 5% When using load capacity charts, what does the term " jib angle to ground" refer to - ANSWERMain boom angle minus the jib's offset When testing a man-basket, how long must the test pick be maintained - ANSWER1926.1431(j)(2) The platform must be lowered by controlled load lowering, braked, and held in a suspended position for a minimum of five minutes with the test load evenly distributed on the platform.

In a range diagram, boom length and angle can be used to determine - ANSWERload radius 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 - ANSWERincrease Most crane manufacturers reduce load capacity for duty-cycle operations because: - ANSWERSide loading, forces may occur Only approved attachments or extra counterweights made by the manufacturer should be place on the rear if the crane because - ANSWERthey could cause a backward stability problem When working on outriggers, the only time they should be less than fully extended is when: - ANSWERthere is a load chart for this operation When working on outriggers, the only time they should be less than fully extended is when: - ANSWERthere is a load chart for this operation Backward stability of the crane is tested with: - ANSWERBasic boom at maximum angle with no load over the side All sheaves used in the boom hoist reeving system must have a rope pitch diameter of not less than __ times the nominal diameter of the rope used if rotation resistant rope is used. - ANSWER1926.1414(e)(4)(ii)(D) 18 What is the minimum pitch diameter for load hoisting sheaves - ANSWERnot less than 18 times rope diameter What is the minimum pitch diameter for boom hoisting sheaves - ANSWERnot less than 15 times rope diameter What is the minimum pitch diameter for load block sheaves - ANSWERnot less than 16 times rope diameter

Outrigger blocking should be at least - ANSWER3X pad size LMI shall be installed on cranes with a lifting capacity of: - ANSWER3 tons and above When lifting personnel, the crane's hook must be the type that: - ANSWERcan be closed and locked Allowable jib backlash is how much - ANSWER5 degrees Crane must be level within what % upgrade - ANSWER1% A periodic inspection is: - ANSWERMonthly to annually Test loads shall not exceed what % of manufacturer's load ratings - ANSWER110% Cranes idle for more than 6 months must have what inspections performed - ANSWERFrequent, periodic, and wire rope T or F; Rotation resistant ropes may be used as boom hoist reeving when load hoists are used as boom hoists for attachments such as luffing attachments or boom and mast attachment systems. - ANSWER1926.1414(e)(4)(ii) T What is the safety factor of rotation resistant rope while lifting personnel? - ANSWER10: