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Front 1

The crane is out of level, you release the swing brake, the boom swings downhill, your:

Back 1

load radius increases.

Front 2

Blocking can be placed under the ends of tracks to:

Back 2

increase the crane’s stability when operating over front or back.

Front 3

What quadrant produces the least amount of ground pressure on a lattice crawler:

Back 3

side

Front 4

On lattice boom cranes fitted with power load lowering, a heavy load should be lowered by using the:

Back 4

power load-lowering feature and the foot brake.

Front 5

Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect?

Back 5

Overturning the crane or collapsing the boom.

Front 6

When the boom handle is released to its center position, which action should be expected?

Back 6

The boom hoist will be held stationary.

Front 7

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

Back 7

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

Front 8

If you can’t level your crawler crane:

Back 8

don’t operate crane.

Front 9

What effect does having the crawlers retracted have on a crawler crane with a long boom?

Back 9

Decrease in capacity.

Front 10

Your crawler crane is on a barge, it is necessary to:

Back 10

secure the crane to the barge.

Front 11

A pin-connected lattice boom is being dismantled. After connecting the equalizer (bridle) to the connecting lugs on the boom, which boom connecting pins should be removed first?

Back 11

Lower connection pins, located at and ahead of the equalizer.

Front 12

When using a mobile crane on a barge, the crane’s load capacity chart shall be:

Back 12

replaced by a list chart.

Front 13

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

Back 13

1

Front 14

If high winds are expected and the lattice boom crane must be secured pointing into the wind, then the hook should be:

Back 14

secured to a solid structure directly below the boom point.

Front 15

When assembling a lattice boom on most crawler cranes using inserts of different lengths, which insert section generally should be closest to the boom foot?

Back 15

10 ft.

Front 16

During assembly where should you attach slings to lift boom sections?

Back 16

End fittings

Front 17

Which boom configuration can cause the most hazardous boom side-loading condition?

Back 17

Long boom with minimum radius.

Front 18

When is it safe to handle loads under power lines?

Back 18

The load nor any part of the crane can come closer than regulations allow.

Front 19

On a lattice boom truck crane, boom angle is measured between the centerline of the:

Back 19

loaded boom and the horizontal.

Front 20

When a lattice boom truck crane is lifting on outriggers, the floats or pads should always be:

Back 20

secured to the outriggers.

Front 21

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 21

cantilever length.

Front 22

When lattice boom is being disassembled or shortened, it is extremely important to:

Back 22

never touch any pin on any boom section located between the pendant attachment points and the crane.

Front 23

When installing a pin-connected lattice boom on a mobile crane you should always:

Back 23

use the boom hoist pawl to hold the boom.

Front 24

When you change the jib to ground angle from 400 to 300, you have:

Back 24

decreased the capacity of the jib.

Front 25

A lattice boom truck crane with a 120 ft. boom will be operating at a 42 ft. radius. The load
chart shows an entry indicating 25,000 lbs. at a 40 ft. radius, followed immediately by an
entry listing 20,000 lbs. at a 45 ft. radius. What is the crane’s capacity at the 42 ft. radius?

Back 25

20,000 lbs

Front 26

A truck crane operating with outriggers fully extended and set, does not have a fifth front outrigger, the operator should:

Back 26

refer to the manufacturer’s working area diagram.

Front 27

A crane that climbs a 7% grade, one mile hill, should descend down the hill in:

Back 27

Either fourth or fifth gear.

Front 28

A lattice boom truck crane, when setup out of level, will lose the most capacity with?

Back 28

Long boom; short radius

Front 29

The device that automatically stops the boom when it nears the maximum angle is the:

Back 29

boom hoist kick-out.

Front 30

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

Back 30

point where the outriggers touch the ground.

Front 31

The purpose of placing mats or cribbing under outrigger floats is to:

Back 31

distribute the downward force of the float over a larger area.

Front 32

A crane loses stability when its leverage on the load is:

Back 32

less than the load’s leverage on the crane.

Front 33

If a lattice boom truck crane is going to perform work over the front it must have:

Back 33

a front-mounted outrigger.

Front 34

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

Back 34

the total weight of the crane and its load.

Front 35

How does high wind affect the setup of a crane with a long boom?

Back 35

Introduces side load onto the boom.

Front 36

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 upperworks will move:

Back 36

closer to the axis.

Front 37

When personnel platforms are lifted with a telescopic crane:

Back 37

a two block damage prevention system is provided.

Front 38

What item can be removed from a carrydeck?

Back 38

boom extension

Front 39

The lever on the far left of most hydraulic cranes is:

Back 39

boom swing.

Front 40

A telescopic crane is equipped with an anti-two-block lock-out device. When the device is activated which functions should be disabled?

Back 40

hoist up, extend out, and lower the boom

Front 41

When transporting a load on the deck of a carrydeck crane, the operator should:

Back 41

travel with the outriggers partially extended.

Front 42

Jib capacities are based on:

Back 42

structural strength.

Front 43

When making a lift on outriggers, the maximum ground-bearing pressure occurs:

Back 43

over the corner.

Front 44

A crane’s jib is offset 150 versus its original 00 offset, but the boom angle remains unchanged. In this situation, the load radius:

Back 44

increases.

Front 45

Blocking which is not tightly placed may fail at:

Back 45

50%

Front 46

If the jib is offset, the crane’s capacity will:

Back 46

Reduced

Front 47

The safest speed for a crane carrying a load is:

Back 47

the manufacturer’s speed limit.

Front 48

The boom angle indicator indicates:

Back 48

angle of boom to horizontal

Front 49

When performing a pick-and carry lift with a rough-terrain hydraulic crane, which of the following is the most important consideration?

Back 49

Keeping the boom as low as possible with the load close to the ground.

Front 50

In setting up the crane, the operator can extend three outriggers fully and one only halfway out, but all vertical cylinders are down, and floats are on good supports. The operator must:

Back 50

use the “on rubber” load chart.