with complete correct answers
Where shall the hand signals for the machine in use be posted - correct answer ✔✔On the job
site
Where is it best to connect slings to lift boom sections - correct answer ✔✔End fittings
All manufacturers load charts and operations manual shall be kept - correct answer ✔✔On the
machine
When shall wire rope be taken out of service if used as a running line for hoisting - correct
answer ✔✔Six randomly distributed broken wires in 1 lay
When shall wire rope be taken out of service if used as a running line for hoisting - correct
answer ✔✔Three broken wires in one rope lay
What is the major reason for mobile crane accidents - correct answer ✔✔Improper crane setup
What happens to the jib capacity as the jib angle to the ground increases - correct answer
✔✔Increases
When first lifting the boom off the ground, which position should the gantry be in? - correct
answer ✔✔Highest
When dismantling a lattice crane boom which pins should be removed first - correct answer
✔✔Bottom
, The distance from the center rotation of the crane the the center of a freely suspended hoist
line is called - correct answer ✔✔Radius
What is it called when the ultimate strength of an object is divided by the safe working load for
that object - correct answer ✔✔Safety factor
The point about which a crane tips is called - correct answer ✔✔Tipping axis
Which percentage of tipping is a crawler crane's stability rated at - correct answer ✔✔75%
On a lattice boom crane what is a fixed A frame called that is located at the top of the
superstructure which has the boom cable attached to it - correct answer ✔✔Gantry
On a lattice boom crane what is a pivoting a frame which is at the base of the boom and has a
fixed angle with the boom called - correct answer ✔✔Live mast
When a load is lifted from the ground, what happens to the loads center of gravity - correct
answer ✔✔It will move directly under the boom point sheave
When contact has been made with an electrical power line, what should the operator do first -
correct answer ✔✔Try to break contact
When the values fall between the ratings shown on the load chart for radius, what rating should
be used - correct answer ✔✔Next longer radius
On a crawler crane what should the operator do if the load weight is not known - correct
answer ✔✔Determine by calculating the load weight vs. crane capacity