NCCCO Mobile Crane Exam: 99 Questions and Answers (Crane Practice Tests), Exams of Workplace Safety

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NCCCO MOBILE CRANE EXAM/99 QUESTIONS AND

ANSWERS (CRANE PRACTICE TESTS)

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 - Correct 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% - Correct 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 - Correct answer-c.

4. 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 - Correct answer-d.
5. 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 - Correct answer-a.
6. 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 - Correct answer-a.
7. What Standard Method hand signal is being illustrated?

a. Swing b. Stop c. Emergency Stop d. Travel - Correct answer-a.

d. Over the left side - Correct answer-a.

13. 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 - Correct answer-d.
14. 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%. - Correct answer-c.
15. 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 - Correct answer-c.
16. 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 - Correct answer-c.
17. 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. - Correct answer-b.

18. 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 - Correct answer-c.
19. What is the OSHA regulation governing cranes in construction? a. 1910. b. 1926. c. 1926. d. 1910.184 - Correct answer-b.
20. Under which circumstance is a crack in the windshield of a crane cab okay? a. As long as it causes no visible distortion that would interfere with safe operations b. As long as it is less than 6 inches long c. As long as the windshield is replaced on the next annual inspection d. It is never okay - Correct answer-a.
21. 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 - Correct answer-b.

c. To improve stability d. Never - Correct answer-d.

27. 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 - Correct answer-b.
28. 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% - Correct answer-b.
29. 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 - Correct answer-b.
30. 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 - Correct answer-c.

What standard method hand signal is being illustrated?

a. Boom up b. Boom down c. Retract boom d. Hoist - Correct answer-c.

32. Where should the crane's outrigger pads or tracks be placed when working at ground floor level near a cellar wall? a. As close as possible to the wall b. At least as far back as the depth of the wall below ground c. At a distance at least half the depth of the cellar wall below ground d. Anywhere, since the wall is unaffected by the weight of the crane - Correct answer-b.
33. How should the wheels of a crane be positioned when it is set up for working on outriggers? 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 - Correct answer-c.
34. 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 - Correct answer-a.
35. When may a swivel be used with rotation resistant wire rope? a. Always b. Never c. If the rope manufacturer approves

a. 3 b. 4 c. 5 d. 6 - Correct answer-c.

41. 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 - Correct answer-b.
42. 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 c. A length estimated between the lengths in the chart d. The next longest or the next shortest boom length, whichever is the lower capacity - Correct answer- d.
43. When is it okay to temporarily bypass a crane's overload warning system? a. When a supervisor tells you to b. When the load to be lifted exceeds the capacity in the chart c. Never d. During assembly/disassembly operations - Correct answer-d.
44. What happens to the leverage of the load on a crane as the boom is being lowered? a. It increases b. It decreases c. It stays the same

d. It depends on the weight of the load being lifted - Correct answer-a.

45. 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 - Correct answer-a.
46. 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 - Correct answer-a.
47. 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 - Correct answer-b.
48. 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 - Correct answer-c.
49. What hand signal must be obeyed at all times? a. Swing

a. side load the boom b.decrfrease the radius c. increase the radius d. have no effect - Correct answer-c.

9. When should tag lines be used? a. Always b. Always, except when the use of the tagline become hazardous c. Ehen the rotation of the load becomes hazardous d. When the operator cant see the load - Correct answer-c.
10. What shall be in the operators cab during crane operations? a. load charts b. Inspection reports c. Hand signal chart d. The crane log - Correct answer-a.
11. Which of the following is considered duty cycle work? a. Pile- driving b. Setting trusses c. Clam - Shell digging d Unloading trucks - Correct answer-c.
12. When doing cycle work, the load chart must be reduced by how much? a. 50% b. 20% c. 30% d. none - Correct answer-b.

13. Which components are not parts of the boom? a. Lacing b. Cords c. Cross members d. Heel pins - Correct answer-d.

Where must the operator's manual be kept during crane operations? - Correct 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? - Correct answer-Physical, Written Test, Practical Test

What hand signal must be obeyed at all times? - Correct answer-Stop

When removing pins or bolts from a boom assembly, workers shall remain _________________. - Correct answer-out from under the boom

When may a crane be overloaded? - Correct answer-Never

When can the operator leave the crane? - Correct answer-After securing the crane

When can a crane be side loaded? - Correct answer-With a freely suspended load

The deflection of a boom will cause the load to __________________________. - Correct answer- increase the radius

When should tag lines be used? - Correct answer-When the rotation of the load becomes hazardous

What shall be in the operator's cab during crane operations? - Correct answer-Load charts

What is the OSHA standard for cranes in construction industry? - Correct answer-29 CFR-1926. Subpart CC

What are the requirements to be a crane inspector? - Correct answer-Same as operator

What percentage of the crane chart is considered a critical lift? - Correct answer-75%

A multi crane lift shall require - Correct answer-Critical lift plan, reduction of gross capacity by 25% and one designated person in charge.

When doing a pick and carry, tire pressure must - Correct answer-meet manufacturer's specifications

The load chart is matched to the crane by: - Correct answer-Serial number

Where do you find recommended reeving for the hoist lines? - Correct answer-Owner's manual

Not extending telescoping boom sections equally; what may occur? - Correct answer-Longer section collapse

What are the broken wire removal requirements for rotation resistant wire rope? - Correct answer- broken wires in 6 diameters or 4 in 30 diameters

How should wire rope be inspected during a frequent inspection? - Correct answer-Visually

What is the object of rope lubrication? - Correct answer-A and B

What is the design factor for rotation resistant rope used as a hoist line? - Correct answer-5:

The load hoist drum flange shall be _________________. - Correct 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? - Correct answer-

Load hoist sheaves and boom tip sheave shall have pitch diameters not less than times the nominal diameter of the rope used. - Correct answer-

Per ANSI B30.5, when operating near high voltage line of 250 KV the minimum clearance is ___________________. - Correct answer-20 FT

Per ANSI B30.5, when in transit under power lines of 350 KV the minimum clearance is? - Correct answer-16 FT