License practice test Part 2

Question 1

What is gross capacity?

Answer 1

The number found in the load chart, never to be exceeded

Question 2

What is the broken wire removal criteria for wire rope slings?

Answer 2

5 broken wires in 1 strand in one lay or 10 random broken wires in 1 lay

Question 3

What is the load that is applied to test rigging gear?

Answer 3

125% for 5 minutes

Question 4

What is effective weight?

Answer 4

Is the weight of an object in comparison to its placement on the crane

Question 5

Describe daily inspection

Answer 5

Before each shift
Appointed person
No records needed

Question 6

Describe periodic inspection

Answer 6

1-12 month intervals
Records kept
Qualified person

Question 7

What is the unit weight of steel

Answer 7

490lbs/cu ft

Question 8

Define boom angle

Answer 8

If you drew a line from the center of the boom then to the horizontal

Question 9

Included angle of a hook

Answer 9

90 degrees

Question 10

The operator shall test the brakes each time a load is approaching the rated load or is handled,
by

Answer 10

Slightly lift the load off the ground apply the brakes and see if they hold

Question 11

The horizontal lines represent what on the Range diagram?

Answer 11

Elevation and boom tip height

Question 12

What is jib angle to ground?

Answer 12

Main boom angle minus jib offset

Question 13

Above the bold line and a load chart represents what?

Answer 13

Structural competence

Question 14

The unit weight of water is what?

Answer 14

62 pounds per cubic foot

Question 15

Load chart capacities for
Outrigger
Rubber
Crawler

Answer 15

Outrigger 85%
Rubber 75%
Crawler 75%

Question 16

What is the maximum load that can be applied to working gear in service

Answer 16

WLL or SWL

Question 17

What is the wear criteria for hooks?

Answer 17

5% in critical areas 10% in other areas
5% but no more than a 1/4” in the throat opening

Question 18

What is the best way to reeve a block and why

Answer 18

Even parts reeved symmetrically to avoid torsion of boom tip

Even to boom odd to block

Question 19

What is ductility

Answer 19

The point of material can be stretched or flexed without failure

Question 20

What is a range diagram?

Answer 20

A 2D picture showing crane configuration, radius, Boom tip height and boom angle

Question 21

How much more capacity does a four legged chain have compared to a three legged chain?

Answer 21

0 capacity only adds stability

Question 22

How many gallons per cubic foot

Answer 22

7.48 gallons per cubic foot

Question 23

Double leg basket must not be used at an angle less than?

Answer 23

60 degrees

Question 24

3 degrees off level can lose as much as

Answer 24

50% capacity

Question 25

What is the formula for the volume of a cube?

Answer 25

LxHxW

Question 26

What is the formula for the volume of a cylinder?

Answer 26

3.14 x R2 x length 3.14 x (d x d DIVIDED by 4) x length

Question 27

Wire rope core is % stronger than fiber core

Answer 27

7.5%

Question 28

3 types of shakles

Answer 28

Safety pin Screw pin Bolt type

Question 29

Name a type of wire rope that has a tendency to untwist

Answer 29

Lang lay because all the wires go in the same direction

Question 30

Testing a crane after repairs shall not exceed % of manufacturers load rating

Answer 30

110%

Question 31

What angle should sorting hooks be used? What happens to the 7 1/2 ton WLL when tip loaded

Answer 31

45 degrees 2 Ton WLL if tip loaded

Question 32

What is D/d ratio

Answer 32

Diameter of the object/load (D) compared to the diameter of the wire rope (d)

Question 33

Duty cycle has a % reduction of capacity

Answer 33

20%

Question 34

Rigging gear fails at

Answer 34

UBS ultimate breaking strength

Question 35

What is the minimum number of wraps on a hoist drum?

Answer 35

2

Question 36

What do the vertical lines on a range diagram indicate?

Answer 36

Radius

Question 37

What is the definition of lay in reference to wire rope

Answer 37

The way the wires fall in the wire rope

Question 38

What would you lubricate wire rope with?

Answer 38

Non corrosive Cannot hinder inspection Recommended by manufacturer

Question 39

WSC

Answer 39

Wire Strand Core