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HOSMERIT
NCCCO MOBILE CRANE EXAM 2024-2025 LATEST
QUESTIONS AND CORRECT ANSWERS//ALREADY
GRADED A+
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? a. Boom down b. Swing c. Boom up d. Extend boom - ANSWER-c. 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? a. 1% b. 2% c. 5% d. 8% - ANSWER-a. 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? a. Climb down carefully from the crane cab b. Jump down, feet together c. Stay in the cab until the lines are de-energized d. Get as far away from the crane as possible - ANSWER-c. According to OSHA 1926.1413, how many randomly distributed broken wires in rotation- resistant rope are cause for replacement of the rope? a. 1 broken wire in 6 rope diameters b. 2 broken wires in 30 rope diameters
c. 3 broken wires in one strand in one lay d. 2 broken wires in 6 rope diameters - ANSWER-d. What is the net capacity of a crane on main boom unless the manufacturer states otherwise? a. The capacity listed in the load chart minus the weight of the rigging and all attachments b. The capacity listed in the load chart plus the weight of the rigging and all attachments c. The capacity listed in the load chart minus the weight of the rigging and all attachments not in use d. The capacity listed in the load chart minus the weight of the rigging alone - ANSWER-a. What may happen to a properly rigged load when lifted off the ground unless the operator takes account of boom deflection? a. It could swing out away from the crane b. It could swing in towards the crane c. It could raise absolutely vertically d. It could shift in its rigging - ANSWER-a. What Standard Method hand signal is being illustrated? a. Swing b. Stop c. Emergency Stop d. Travel - ANSWER-a. Who should an operator respond to a "stop" signal from? a. Appointed signal person only b. Project manager only c. Superintendent only d. Anyone - ANSWER-d.
b. When the lift has been approved by an engineer c. When other means would be more dangerous d. It is never okay - ANSWER-d. 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? a. 10%. b. 15%. c. 20%. d. 30%. - ANSWER-c. From which two points should the boom be measured? a. From the base of the boom to the center of the boom tip sheave b. From the boom hinge pins to the boom tip c. From the boom hinge pins to the center of the boom tip sheaved. d. From the base of the boom to the boom tip - ANSWER-c. What is the preferred method of installing wire rope from a reel onto a hoist drum? a. The rope runs from the top of the reel to the bottom of the drum b. The rope runs from the bottom of the reel to the top of the drum c. The rope runs from the top of the reel to the top of the drum d. There is no preferred method - ANSWER-c. Over which quadrant are truck crane capacities usually greater? a. Over the front. b. Over the rear. c. Over the front right outrigger. d. Over the side. - ANSWER-b.
According to OSHA, which accessible area of an operating crane must always be barricaded? a. The swing radius of the crane b. The carbody or chassis c. The swing radius of the rear of the rotating superstructure d. The distance between the car body or chassis and the boom tip - ANSWER-c. What is the OSHA regulation governing cranes in construction? a. 1910. b. 1926. c. 1926. d. 1910.184 - ANSWER-b. According to ASME B30.5, what are the minimal requirements to meet crane operator qualifications? a. High School Diploma b. CDL with on the job training c. Physical, Written Test, Practical Test d. CDL physical, employers written permission - ANSWER-c. What hand signal must be obeyed at all times? a. Swing b. Clog-everything c. Stop d. Hoist Slow - ANSWER-c. What capacity should you use when the boom length of the crane falls between the lengths listed in the load chart?
d. It is never okay - ANSWER-a. Under which circumstance does OSHA permits hoisting of personnel by crane? a. As long as the prevailing wind speed is less than 35 mph b. As long as there is no less hazardous or practicable way c. As long as all personnel have CPR training d. As long as no aerial work platform is available - ANSWER-b. 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? a. On-outrigger chart b. On-rubber chart c. On-outrigger chart minus 20% d. On-rubber chart plus 20% - ANSWER-b. Where are the Standard Method hand signals found? a. OSHA Subpart CC b. OSHA 1926. c. ASME B30.R d. They are determined by each manufacturer - ANSWER-a. How many parts of line are required to hoist a 36,500 lb. load if the maximum allowable line pull is 9,000 lb.? a. 3 b. 4 c. 5 d. 6 - ANSWER-c.
What determines the amount of deduction required for an erected jib that is not being used? a. The actual weight of the jib b. The effective weight of the jib c. Nothing, since the jib is not in use d. The difference between the crane's actual weight and its effective weight - ANSWER-b. What should an operator do if a crane's load moment indicator (LMI) malfunctions? a. Cease crane operations and report the condition to the supervisor b. Turn it off and continue as if the LMI were not installed c. Make mathematical allowances for any error d. Attempt to repair the fault - ANSWER-a. Where must the operator's manual be kept during crane operations? a. The operator's manual must be kept in a location that is readily available b. The operator's manual must be kept in the cab at all times c. The operator's manual must be kept in the dispatch office d. The operator's manual must be kept in a secure place - ANSWER-b. According to OSHA, while hoisting personnel, the total load must not exceed what percentage of the crane's rated capacity?" a. 45% b. 50% c. 75% d. 85% - ANSWER-b. When is side loading of crane booms permitted? a. When the operator says it's OK
What shall be in the operators cab during crane operations? a. load charts b. Inspection reports c. Hand signal chart d. The crane log - ANSWER-a. When may a crane be overloaded? a. When the supervisor says it's OK b. Never c. When testing the crane d. When proof testing a man basket - ANSWER-c. When can the operator leave the crane? a. Break time b. End of the shift c. After securing the crane d. When a storm is coming - ANSWER-b. When can a crane be side loaded? a. Dragging a load b. With a freely suspended load c. Never d. Pile-driving - ANSWER-b. What is the result of placing timber blocking under the tips of the tracks on a crawler crane? a. Decreases the permitted capacity of the crane
b. Makes the crane more stable c. Reduces the capacity of the crane d. Makes the crane less stable - ANSWER-b. 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? a. 110% b. 100% c. 85% d. 75% - ANSWER-b. Where is the tipping axis of a crawler crane located? a. It is always at the centerline of the idler or sprocket b. It depends if the idler or sprocket are in line or offset from the track rollers c. It is through the centerline of the crane cab d. It is through the boom butt section - ANSWER-b. What should be done with materials placed under overhead energized power lines? a. Be dragged out b. Be lifted as normal c. Not be lifted by crane d. Handled with extra care - ANSWER-c. What standard method hand signal is being illustrated? a. Boom up b. Boom down c. Retract boom
a. Just touching the ground b. As high as possible off the ground c. Just high enough off the ground to relieve the tires of crane weight d. Firmly on the ground to support the crane - ANSWER-c. What happens to ground bearing pressure if you move a crawler crane from soft ground to harder ground? a. It increases b. It decreases by a third c. It remains the same d. It decreases by half - ANSWER-a. When may a swivel be used with rotation resistant wire rope? a. Always b. Never c. If the rope manufacturer approves d. If the operator decides it's OK - ANSWER-c. What should you do on pick and carry operations? a. Keep the boom as short as possible b. Keep the load as high above the ground as possible c. Ensure the load is as far from the carrier/carbody as possible d. Use maximum boom length - ANSWER-a. What boom position would cause the greatest ground pressure when lifting with crawler cranes? a. Over the right side b. Over the end c. Over the corner
d. over the left side - ANSWER-c. Where should the hook be positioned when preparing to hoist a light load? a. Slightly to the side you're planning to swing to b. Slightly to the side opposite you plan to swing to c. Directly above the load's center of gravity d. Above the edge of the load closest to the crane - ANSWER-c. According to OSHA 1926.1408, what minimum clearance must be maintained between any part of the crane/load and 850kV energized overhead power lines. a. 25 ft. b. 30 ft. c. 35 ft. d. 45 ft. - ANSWER-d. Where must the operator's manual be kept during crane operations? - ANSWER-The operator's manual must be kept in the cab at all times. According to ASME B30.5, what are the minimal requirements to meet crane operatorqualifications? - ANSWER-Physical, Written Test, Practical Test What is the design factor for rotation resistant rope used as a hoist line? - ANSWER-5: The load hoist drum flange shall be. - ANSWER-1/2 in. or higher over the top layer of rope With the hook in the extreme low position, how many wraps shall remain on the load hoist drum?
Per ANSI B30.5, when operating near high voltage line of 250 KV the minimum clearance is
. - ANSWER- 20 FT Per ANSI B30.5, when in transit under power lines of 350 KV the minimum clearance is? - ANSWER- 16 FT When removing pins or bolts from a boom assembly, workers shall remain. - ANSWER- out from under the boom When may a crane be overloaded? - ANSWER-Never When can the operator leave the crane? - ANSWER-After securing the crane When can a crane be side loaded? - ANSWER-With a freely suspended load The deflection of a boom will cause the load to. - ANSWER-increase the radius When should tag lines be used? - ANSWER-When the rotation of the load becomes hazardous What shall be in the operator's cab during crane operations? - ANSWER-Load charts Which of the following is considered duty-cycle work? - ANSWER-Clam-shell digging When doing duty cycle work, the load chart must be reduced by how much? - ANSWER-20% When doing a pick and carry, tire pressure must - ANSWER-meet manufacturer's specifications The load chart is matched to the crane by: - ANSWER-Serial number
Where do you find recommended reeving for the hoist lines? - ANSWER-Owner's manual Which components are not parts of the boom? - ANSWER-Heel pins The boom angle is the angle between. - ANSWER-the ground and centerline of the boom, between sheaves and heel pins Three short audible signals mean - ANSWER-back-up According to ANSI B30.5, hand signal chart shall be posted where? - ANSWER-On the job site A signal person shall be. - ANSWER-designated person, tested An anti-two-block device can be used. - ANSWER-to test the LMI Cranes should be load tested when? - ANSWER-After modifications Upon completion of assembly of the crane, what must be done? - ANSWER-An inspection to ensure that manufacturer specifications are met During crane assembly, the counter weight should be installed when? - ANSWER-Before raising the boom
