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Crane Class > License Practice Test Part 1 > Flashcards

License Practice Test Part 1 Flashcards

1
Q

What is the % of capacity of a triple chain compared to two legs?

A

an additional 50%

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2
Q

Define the mechanical advantage of the block to the winch

A

The SWL increases equal to parts added

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3
Q

What are the broken wire removal criteria for rotation resistant wire rope

A

2 random broken wires in 6 rope diameters, or 4 randomly broken wires in 30 diameters

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4
Q

What is rope lay length

A

The length of a stand to make one full revolution

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5
Q

Define fleet angle

A

The angle between a line drawn from the boom tip sheave to the ground, then a second line drawn from the boom tip sheave to the outer most flange point of the drum. 1.5 degrees smooth 2.0 degrees grooved

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6
Q

What are they wear criteria for taking wire rope out of service?

A

1/3 wear of the outside diameter of original dimension

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7
Q

4 types of cranes

A

Crawler mounted
Carrier mounted
Rough terrain
All terrain

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8
Q

Give two reasons why one crane in a two crane pick would intentionally be given more weight.

A

Offset center of gravity
Odd shaped load
One crane has higher capacity
Tripping

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9
Q

Give two causes of the majority of crane accidents.

A

Improper placement
Improper set up

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10
Q

What type of bolt is used for angular lifts

A

Shouldered eye bolt

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11
Q

The rule of thumb is that all sheaves should have a D/d ratio of?

A

20:1

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12
Q

What is overhaul weight

A

The weight needed to pull the line off the drum

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13
Q

What is the efficiency for Flemish eye

A

90%

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14
Q

What is the termination efficiency of a wedge socket?

A

80%

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15
Q

Being off level results in?

A

Inaccurate radius
Invalid load chart
Uncontrolled swing
Tipping

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16
Q

Wire rope sling capacities

Single leg %
Single choker %
2 leg vertical %

A

Single leg 100%
Single choker 75%
2 leg vertical 200%

17
Q

Minimum D/d ratio

Boom hoist sheaves
Boom tip sheaves
Hoist block sheaves

A

Boom hoist 15/1
Boom tip 18/1
Hoist block 16/1

18
Q

What are 7 of the rejection criteria per ASME B-30.9 for chain slings?

A

10% wear, 5% stretch, weld splatter, twists, gouges, excessive nicks, kinks,
Lack to hinge

19
Q

What is the allowable throat opening on a hook due to wear off the original dimension?

A

5% or 1/4” of the throat opening

20
Q

ANSI-B30.5, OSHA-1926 sub part cc standard refers to?

A

Cranes and derricks in construction

21
Q

5 things to look for when inspection wire rope

A

Electrical contact damage
Crushing
Bird caging
Core protrusion
Wear
Kinking

22
Q

What are the broken wire removal criteria for wire rope terminations?

A

No more than 1 broken wire in 1 rope diameter at termination

No more than two broken wires beyond the end fitting

23
Q

List 3 basic functions of blocks

A

Change of direction
Change of speed
Increase PLP

24
Q

What are 4 causes of bird caging?

A

Sudden stops
Shock loading
Pulling through tight sheaves
Wound to tight on drum

25
Q

What is the termination efficiency of a swage socket?

26
Q

The D/d ratio of shackle to Flemish eye should be?

A

1 size greater

27
Q

Define fleet angle standards for drums

A

1.5 degrees for smooth
2.0 degrees for grooved

28
Q

What is side loading?

A

When the hoist line or load is not going directly under the boom tip

29
Q

What is gross load?

A

The weight of the load plus all your deductions

30
Q

What is the termination efficiency of a spelter socket?

31
Q

What is the formula for the number of clips to make a wire rope turn back eye?

A

3x the diameter of the rope +1

32
Q

List 3 factors that determine crane capacity

A

Structural competence
Crane configuration
Capacity deduction
Cranes stability

33
Q

What is the formula that determines tension in a sling leg?

A

Weight of the load divided by the number of legs multiplied by the L/H factor

34
Q

List 5 criteria that determine a critical lift

A

Working within table A
Specialized rigging
Over 75% capacity
Personnel lifting
2 crane pick

35
Q

List 5 parts of a lattice boom section

A

Pin connection lug
Main cord
Diagonals
Lacings/lattices
Lattice members
Picture frame

36
Q

What is cabling?

A

When a block turns 90 degrees from neutral causing parts of line to make contact

37
Q

What are 2 precautions to take when extending a hydraulic boom?

A

Do not 2 block
Extend evenly

38
Q

Define load radius

A

The distance from center of rotation of the crane to the load but vertical to hoist line

39
Q

List 2 categories in load chart capacities

A

Structural competence
Stability
Optimal boom positioning

Crane Class (18 decks)

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