CHOICE QUESTIONS FOR CRANE & RIGGING
CERTIFICATION
1. Where shall the hand signals for the machine in use be posted?
A) In the operator's manual
B) On the job site
C) In the maintenance shop
D) On the crane cab door
Correct Answer: B
2. Where is it best to connect slings to lift boom sections?
A) Mid-span
B) End fittings
C) At the weld points
D) Wrapped around the center
Correct Answer: B
3. All manufacturers' load charts and operations manuals shall be kept:
A) In the site office
B) On the machine
C) With the project manager
D) In the maintenance log
Correct Answer: B
4. When shall wire rope be taken out of service if used as a running line
for hoisting (six broken wires condition)?
,A) One broken wire in one lay
B) Three broken wires in one lay
C) Six randomly distributed broken wires in one lay
D) Any visible wear
Correct Answer: C
5. When shall wire rope be taken out of service if used as a running line
for hoisting (three broken wires condition)?
A) Three broken wires in one rope lay
B) One broken wire per strand
C) Five broken wires total
D) Corrosion only
Correct Answer: A
6. What is the major reason for mobile crane accidents?
A) High winds
B) Improper crane setup
C) Old wire rope
D) Lack of fire extinguisher
Correct Answer: B
7. What happens to the jib capacity as the jib angle to the ground
increases?
A) Decreases
B) Remains the same
C) Increases
D) Doubles instantly
Correct Answer: C
8. When first lifting the boom off the ground, which position should the
gantry be in?
, A) Lowest
B) Middle
C) Highest
D) Fully lowered
Correct Answer: C
9. When dismantling a lattice boom crane, which pins should be
removed first?
A) Top
B) Middle
C) Bottom
D) Side pins
Correct Answer: C
10. The distance from the center of rotation of the crane to the center
of a freely suspended hoist line is called:
A) Boom length
B) Radius
C) Load moment
D) Tipping radius
Correct Answer: B
11. What is it called when the ultimate strength of an object is divided
by the safe working load for that object?
A) Load factor
B) Design ratio
C) Safety factor
D) Margin index
Correct Answer: C