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NCCCO Mobile Crane Exam: Practice Questions and Answers, Exams of Transport economics

California Career SchoolTransport economics

A set of practice questions and answers for the nccco mobile crane exam. It covers various aspects of crane operation, safety, and regulations, including boom operation, load charts, outrigger setup, and signal communication. Designed to help individuals prepare for the exam by providing a comprehensive overview of key concepts and practical applications.

Typology: Exams

2024/2025

Available from 11/09/2024

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1 | P a g e
NCCCO MOBILE CRANE EXAM|| ACTUAL EXAM
ALL QUESTIONS AND 100% CORRECT ANSWERS
ALREADY GRADED A+|| LATEST AND FULLY
COVERED VERSION 2024-2025 WITH VERIFIED
SOLUTIONS|| ASSURED PASS!!
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?
a. Boom down
b. Swing
c. Boom up
d. Extend boom - ANSWER: c.
2. 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.
3. 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.
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Download NCCCO Mobile Crane Exam: Practice Questions and Answers and more Exams Transport economics in PDF only on Docsity!

NCCCO MOBILE CRANE EXAM|| ACTUAL EXAM

ALL QUESTIONS AND 100% CORRECT ANSWERS

ALREADY GRADED A+|| LATEST AND FULLY

COVERED VERSION 2024-2025 WITH VERIFIED

SOLUTIONS|| ASSURED PASS!!

  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? a. Boom down b. Swing c. Boom up d. Extend boom - ANSWER: c.
  2. 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.
  3. 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.
  1. 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.
  2. 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.
  3. 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.
  4. What Standard Method hand signal is being illustrated? a. Swing

b. They must not be used c. They are based on the stability of the crane d. They should only be used if the crane is set up on outriggers - ANSWER: c.

  1. In which quadrant are rough terrain crane capacities generally greater? a. Over the front b. Over the rear c. Over the right side d. Over the left side - ANSWER: a.
  2. According to federal requirements, under what conditions is it okay for a person to ride the headache ball? a. When there is no other way to gain access 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.
  3. 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.
  4. 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.

  1. 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.
  2. 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.
  3. 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.
  4. What is the OSHA regulation governing cranes in construction?
  1. 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.
  2. When is side loading of crane booms permitted? a. When the operator says it's OK b. So long as no jib is installed c. Only when the outriggers are fully extended d. Only with freely suspended loads - ANSWER: d.
  3. What is indicated if an operator makes two audible signals when moving a crane? a. He/she intends to stop b. He/she intends to back up c. He/she intends to go ahead d. He/she intends to stop (emergency) - ANSWER: c.
  4. When may blocking (cribbing) be placed under outrigger beams? a. When beams cannot be extended all the way out b. To increase capacity c. To improve stability d. Never - ANSWER: d.
  1. 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.
  2. 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.
  3. 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.
  4. 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.

d. It decreases by half - ANSWER: a.

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  1. 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.
  2. 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.
  3. 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.
  4. What capacity should you use when the boom length of the crane falls between the lengths listed in the load chart? a. The next longest boom length b. The next shortest boom length

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.

  1. 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.
  2. 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.
  3. What hand signal must be obeyed at all times? a. Swing b. Clog-everything c. Stop d. Hoist Slow - ANSWER: c.
  4. When removing pins or bolts from a boom assembly, workers shall remain a. clear of sledge hammers

b. out from under the boom c. on top of boom holding pendants d. in sight of the operator - ANSWER: b.

  1. 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.
  2. 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.
  3. When can a crane be side loaded? a. Dragging a load b. With a freely suspended load c. Never d. Pile-driving - ANSWER: b.
  4. The deflection of a boom will cause the load to? a. side load the boom b.decrfrease the radius

d. none - ANSWER: b.

  1. Which components are not parts of the boom? a. Lacing b. Cords c. Cross members d. Heel pins - 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 hand signal must be obeyed at all times? - ANSWER: Stop 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% 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

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 Not extending telescoping boom sections equally; what may occur? - ANSWER: Longer section collapse What are the broken wire removal requirements for rotation resistant wire rope? - ANSWER: 2 broken wires in 6 diameters or 4 in 30 diameters How should wire rope be inspected during a frequent inspection? - ANSWER: Visually What is the object of rope lubrication? - ANSWER: A and B 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? - ANSWER: 2 Load hoist sheaves and boom tip sheave shall have pitch diameters not less than times the nominal diameter of the rope used. - ANSWER: 18

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