Technical Knowledge

Front 1

1. The boom angle indicator shows boom angle and:

Back 1

A. Is used along with boom length to determine radius and boom height.

Front 2

2. Telescopic booms are raised and lowered by:

Back 2

C. Hydraulically powered cylinders attached to the bottom of the boom base section and the crane structure activated by hydraulic motors, pumps and valves.

Front 3

3. The construction and breaking strength of wire rope determines:

Back 3

D. Safety factor and safe working load

Front 4

4. Regular constructed crane hoist wire rope shall be taken out of service when any of the following conditions exist:

Back 4

D. All of the above

Front 5

5. What is the safety factor for rotation resistant hoist wire rope?

Back 5

C. 5.0 to 1

Front 6

6. What is the safety factor for regular lay hoist wire rope?

Back 6

B. 3.5 to 1

Front 7

7. What is the safety factor for rigging gear (chokers and slings)?

Back 7

C. 5.0 to 1

Front 8

8. What is the safety factor of hoisting chain?

Back 8

C. 4

Front 9

9. What grade alloy steel chain should be used for hoisting slings?

Back 9

C. 80

Front 10

10. What is the SWL of RRL 6x25 IWRC Hoise Wire Rope?

Back 10

A. 3.5 to 1

Front 11

11. What is the SWL of boom hoist wire rope?

Back 11

A. 3.5 to 1

Front 12

12. What is the Nominal Strength of Wire Rope?

Back 12

B. The published catalog strength calculated by a standard procedure.

Front 13

13. What is a two-leg bridle?

Back 13

C. Two wire rope slings attached by lifting ring

Front 14

14. Standing wire ropes must be replaced if they have more than how many broken wires in one strand?

Back 14

D. All of the above

Front 15

15. According to OSHA regulations, what is the minimum number of full wraps of wire rope that must remain on the hoist drum in all service conditions?

Back 15

C. Two

Front 16

16. By order of hitch strength, which is the correct answer?

Back 16

B. Basket, vertical, choker

Front 17

17. When the number of layers of rope on a drum increases the:

Back 17

A. Maximum line pull decreases

Front 18

18. How many randomly broken wires in one lay must there be to remove a running wire rope from service?

Back 18

D. 6

Front 19

19. What is the safety factor required when using non-rotating wire rope and lifting a personnel platform?

Back 19

D. 10

Front 20

20. What is the minimum design factor required for a right regular lay main, boom or auxiliary hoist rope?

Back 20

B. 3.5

Front 21

21. If the SWL of a cranes wire rope is 10,000 lbs using one part, what is the SWL when using 4 parts?

Back 21

D. 40,000 lbs

Front 22

22. How many broken wires must be present in one strand of one lay for running wire rope to be removed from service?

Back 22

A. 3

Front 23

23. What is the standard hoist rope used on most American made cranes?

Back 23

A. Right regular lay

Front 24

24. When using cable or nylon Bridle it is important to remember:

Back 24

B. The lower the spreader angle the greater the tension

Front 25

25. What is the minimum number of broken wires acceptable before replacement on a standing wire rope away from end socket?

Back 25

C. 2

Front 26

26. When a lattice boom truck crane is operating on properly set outriggers, the tipping axis is located at the:

Back 26

D. Point where the outriggers touch the ground

Front 27

27. A crane loses stability when its leverage or moment on the load is:

Back 27

A. Less than the load's leverage or moment on the crane.

Front 28

28. Each outrigger pad and its blocking should be sufficient to support:

Back 28

B. The total weight of the crane and its load

Front 29

29. How many broken wires are permitted at the end connection of a pendant before it must be taken out of service?

Back 29

D. 1

Front 30

30. When a lattice boom truck crane that is properly set up with no front outrigger and the boom is positioned over the front, the combined center of gravity of the carrier and upper works will move:

Back 30

B. Closer to the axis

Front 31

31. How does the effective weight of a stowed jib/extension relate to the actual weight of the jib/extension?

Back 31

A. Lower than the actual weight

Front 32

32. According to ASME B30.5 mobile crane standard, how many randomly distributed broken wires in rotation-resistant hoist wire rope are cause for considering replacement of the rope?

Back 32

D. 2 broken wires in 6 rope diameters

Front 33

33. Using the preferred method of installing wire rope from a reel onto a hoist drum, the rope runs from the:

Back 33

C. Top of the reel to the top of the drum

Front 34

34. The tipping axis of a crawler crane is:

Back 34

A. at the centerline of the idler or sprocket

Front 35

35. Eccentric main boom tip reeving causes which of the following:

Back 35

C. Twisting or distortion of the boom

Front 36

36. How many broken wires must be present in one strand of one lay for running wire rope to be removed from service?

Back 36

A. 3

Front 37

37. A frequent inspection is:

Back 37

B. Daily to monthly

Front 38

38. A periodic inspection is:

Back 38

A. Monthly to annually

Front 39

39. Cranes idle for more than 6 months must have ____ inspections performed.

Back 39

A. Frequent and periodic

Front 40

40. Crane hooks must not be twisted in excess of:

Back 40

A. 10 degrees

Front 41

41. A crane hooks throat open must not exceed:

Back 41

B. 15% of its original size

Front 42

42. What is the "jib offset"?

Back 42

A. Jib angle to the boom

Front 43

43. You are required to pass a physical exam every ____ years according to ASME B30.5?

Back 43

C. 3 years

Front 44

44. When operating a mobile crane you inspect your running wire rope at least:

Back 44

A. Daily

Front 45

45. Line pull is:

Back 45

A. The amount of weight a drum will hoist for a given layer

Front 46

46. It is important to inspect rotation resistant wire rope more frequently because:

Back 46

B. Internal damage will occur more frequently.

Front 47

47. It is important to know when lubricating wire rope that the lubricant must:

Back 47

A. Not hinder visual inspection

Front 48

48. Breaking strength divided by the design factor equals:

Back 48

A. Safe working load

Front 49

49. How often should all running ropes in service be visually inspected?

Back 49

A. Once each working day

Front 50

50. Referring to the standard format of sling load charts, the angle between the top of the load and the sling leg is called the:

Back 50

D. Horizontal angle

Front 51

51. During disassembly of a long boom, the Pendant lines are connected at the maximum cantilever point and the Pendant lines have taken appropriate weight of the boom. Which pins should be removed first?

Back 51

C. The bottom pins ahead of the cantilever point

Front 52

52. On a lattice boom crawler crane, the main boom length is measured from the:

Back 52

C. Center of the boom heel pins to the center of the boom tip sheave.

Front 53

53. 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:

Back 53

C. Cantilever length

Front 54

54. According to OASHA maximum jib backlash is how much?

Back 54

C. 5 degrees

Front 55

55. Wire clips used in conjunction with wedge sockets must be attached to what?

Back 55

A. The dead end of a rope

Front 56

56. Which of the following is classified as a standing wire rope?

Back 56

D. Pendant line

Front 57

57. The dead-end of a wire rope above the wedge socket must extend a minimum of 6 times the rope diameter or:

Back 57

B. 6 inches