NCCCO MOBILE CRANE EXAM QUESTIONS WITH REVISED AND UPDATED ANSWERS
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Course
NCCCO MOBILE CRANE
Institution
NCCCO MOBILE CRANE
NCCCO MOBILE CRANE EXAM QUESTIONS WITH REVISED AND UPDATED ANSWERS
What hand signal must be obeyed at all times? - Answer-Stop
When removing pins or bolts from a boom assembly, workers shall remain _________________. - Answer-out from under the boom
When may a crane be overloaded? - Answer-...
NCCCO MOBILE CRANE EXAM
QUESTIONS WITH REVISED AND
UPDATED ANSWERS
What hand signal must be obeyed at all times? - Answer-Stop
When removing pins or bolts from a boom assembly, workers shall remain
_________________. - Answer-out from under the boom
When may a crane be overloaded? - Answer-Never
When can the operator leave the crane? - Answer-After securing the crane
When can a crane be side loaded? - Answer-With a freely suspended load
The deflection of a boom will cause the load to __________________________. -
Answer-increase the radius
When should tag lines be used? - Answer-When the rotation of the load becomes
hazardous
What shall be in the operator's cab during crane operations? - Answer-Load charts
Which of the following is considered duty-cycle work? - Answer-Clam-shell digging
When doing duty cycle work, the load chart must be reduced by how much? - Answer-
20%
Which components are not parts of the boom? - Answer-Heel pins
The boom angle is the angle between ___________________ . - Answer-the ground
and centerline of the boom, between sheaves and heel pins
Three short audible signals mean - Answer-back-up
According to ANSI B30.5, hand signal chart shall be posted where? - Answer-On the job
site
A signal person shall be ________________. - Answer-designated person, tested
, An anti-two-block device can be used _________________ . - Answer-to test the LMI
Cranes should be load tested when? - Answer-After modifications
Upon completion of assembly of the crane, what must be done? - Answer-An inspection
to ensure that manufacturer specifications are met
During crane assembly, the counter weight should be installed when? - Answer-Before
raising the boom
A long boom crane at a short radius and out of level by 300 can see a reduction
incapacity by as much as: - Answer-50%
Crane stability is based on - Answer-lever principle
What is the OSHA standard for cranes in construction industry? - Answer-29 CFR-1926.
Subpart CC
What are the requirements to be a crane inspector? - Answer-Same as operator
What percentage of the crane chart is considered a critical lift? - Answer-75%
A multi crane lift shall require - Answer-Critical lift plan, reduction of gross capacity by
25% and one designated person in charge.
When doing a pick and carry, tire pressure must - Answer-meet manufacturer's
specifications
1. What action does a signal person intend the operator to perform if he extends his arm
at shoulder height, makes a fist with his hand, and sticks his/her thumb up?
a. Boom down
b. Swing
c. Boom up
d. Extend boom - Answer-c.
2. When hoisting personnel, within what percentage of level must a telescopic boom
crane be in order for the gross ratings in the load chart to remain valid?
a. 1%
b. 2%
c. 5%
d. 8% - Answer-a.
3. The load line of the crane you're operating contacts an energized power line. There's
no sign of any other danger, such as fire. What should you do?
a. Climb down carefully from the crane cab
b. Jump down, feet together
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