2020-2021

Question 1

The first recorded use of cranes is found in the history of Ancient Greece, around the___century

Answer 1

Fifth

Question 2

In first century A.D., treadmills were powered by______

Answer 2

Humans

Question 3

Industrial cranes have____centers of gravity to permit operation in narrow aisles or runways without outriggers.

Answer 3

Low

Question 4

The entire rotating crane structure the lies above the swing circle is referred to as the ______of the crane.

Answer 4

Upperworks

Question 5

When a luffing jib is raised or lowered independently of the boom, the crane’s____ is used as the jib hoist.

Answer 5

Auxiliary winch

Question 6

Carrier mounted telescopic boom cranes are subdivided by the type of____section with which they are equipped

Answer 6

Head

Question 7

The center of gravity is the point in the object around which it’s weight is______.

Answer 7

Evenly distributed

Question 8

A mobile crane is stable when it’s leverage on the load is______the load’s leverage on the crane.

Answer 8

Greater than

Question 9

The leverage the crane exerts on the load changes as it_______.

Answer 9

Swings

Question 10

Unless otherwise indicated, if the actual boom length falls between the values listed in the load chart, use the gross capacity for the next_______

Answer 10

Longer boom length listed in the chart

Question 11

On a loaded lattice boom crane, the boom angle is the angle between the____line of the boom and the horizontal

Answer 11

Center

Question 12

If the actual boom angle falls between the values listed in the load chart, use the gross capacity rating for the next_____

Answer 12

Lower boom angle listed in the chart

Question 13

Mobile crane main boom load charts indicate where strength factors apply and where stability factors apply by dividing the chart with a heavy solid line or by using_____.

Answer 13

Shaded areas

Question 14

Asymmetrical reeling of the boom tip will cause___in the boom.

Answer 14

Torsion

Question 15

When a crane is set up off-level, swinging from the high side to the low side increases the_____.

Answer 15

Operating status

Question 16

When working on rubber, an operator can overcome outswing by____.

Answer 16

Booming up as the load is lifted

Question 17

Boom strength is most affected when the wind is from the_____.

Answer 17

Side

Question 18

Which of the following is NOT one of the key roles that must be known at every crane and Derrick worksite?

Answer 18

Job Stewart

Question 19

The target levels provided on most machines can be used for the initial leveling, but do not rely on them for precision or final leveling. Which of the following methods should be used instead?

Answer 19

Hoist line or 3’ or 4’ level

Question 20

Which is the following is a condition for a crane on outriggers properly set for lifting?

Answer 20

The hook is directly above the load’s center of gravity

Question 21

Joining lengths of wire rope by splicing is______.

Answer 21

Prohibited

Question 22

Where a wire rope is required to be removed from service, either the equipment (as a whole) or the hoist with that wire rope must be_____, until the wire rope is repaired or replaced.

Answer 22

Tagged-out

Question 23

Inspect non-rotating (rotation-resistant, non-spin, spin-resistant) wire ropes very carefully because they tend to wear_____.

Answer 23

From the inside out

Question 24

Which of the following is NOT a potential hazard when assembling and disassembling lattice booms?

Answer 24

Crew members understanding their tasks

Question 25

Lifting from jibs or boom extensions while____is prohibited by most manufacturers.

Answer 25

On rubber

Question 26

When disassembling booms and jibs, none of the pins in the pendant are to be removed (partly or completely) when the pendants are in_____.

Answer 26

Tension

Question 27

The_____must provide an adequately prepared working area for the crane.

Answer 27

Controlling entity

Question 28

During the erection of a tower crane, it may be necessary________or support the tower depending on its free-standing height.

Answer 28

Guy

Question 29

When erecting the main jib, place the main jib on timber blocking and place the slings so that the assembly can be hoisted level. Hoist the main jib level with the____and connect it using the proper pins.

Answer 29

Turntable

Question 30

All tower crane nuts and bolts must be well lubricated, of the correct size and grade, and tightened sufficiently to develop a_______greater than the dynamic loads that will be applied to them

Answer 30

Pre-tension

Question 31

An ironworker is a part of a crew erecting a tower crane and finds a loose nut on a bolt that had been previously tight. What should the ironworker do?

Answer 31

Install a new nut and bolt

Question 32

When climbing a tower crane, immediately prior to the climbing operation, the wedges or clamps must be_____to allow for free upward movement of the tower

Answer 32

Released

Question 33

When dismantling a tower crane, never release any of the tower crane’s_____, bolts, pendants,etc., until the section or component is properly slung and balanced and the total weight is being carried by the other crane or the Derrick.

Answer 33

Pins

Question 34

Before making a lift with a tower crane, ensure that the load has been properly____and well secured to prevent the movement or dislodgment of any part.

Answer 34

Rigged

Question 35

Extreme caution should be exercised when traveling with over 50 percent capacity loads as track irregularities will subject to______loads, which must be compensated for by reducing the hook load.

Answer 35

Shock

Question 36

If the operator becomes aware of a safety problem and needs to communicate with the signal person, the operator must safely stop operations. Operations must not resume until the operator and signal person agree that the problem has been_____.

Answer 36

Resolved

Question 37

The signal person must have a basic understanding of the equipment operation and limitations, including the crane dynamics involved in swinging and stopping loads and boom deflection from____loads.

Answer 37

Hoisting

Question 38

Which of the following is NOT a type of Derrick that ironworkers would not work with?

Answer 38

Gantry

Question 39

For guy derricks, the minimum number of guys must be_____with equal spacing.

Answer 39

6

Question 40

The mast base must permit the mast to rotate freely when necessary and permit____of the mast without binding.

Answer 40

Deflection

Question 41

Prior to initial use, new or reinstalled derricks must be tested with no hook load by a competent person to verify proper operation. Complete this statement describing one item that the test must include: lifting and lowering the hook(s) through the full range of____travel

Answer 41

Hook

Question 42

Derrick tests conducted must be documented and must contain the date, test results, and the name of the_____.

Answer 42

Tester

Question 43

When using floating cranes, the employer must erect and maintain control lines, warning lines, railings or similar barriers to mark the boundaries of the_____areas.

Answer 43

Hazard

Question 44

Gantry cranes, bridge cranes, and overhead cranes, are all types of cranes which lift objects by a hoist which is fitted in a hoist trolley and can move_____on a rail or pair of rails fitted under a beam

Answer 44

Horizontally