NCCCO - National Commission for the Certification of
Crane Operators
NCCCO Tower Crane Operator Certification Exam
Course Title and Number: NCCCO Tower Crane Operator
Certification Exam
Exam Title: Board Exam
Exam Date: Exam 2024- 2025
Instructor: [Insert Instructor’s Name]
Student Name: [Insert Student’s Name]
Student ID: [Insert Student ID]
Examination
180 minutes
Instructions:
1. Read each question carefully.
2. Answer all questions.
3. Use the provided answer sheet to mark your responses.
4. Ensure all answers are final before submitting the exam.
5. Please answer each question below and click Submit when you have completed
the Exam.
6. This test has a time limit, The test will save and submit automatically when the
time expires
7. This is Exam which will assess your knowledge on the course Learning
Resources.
Good Luck!
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NCCCO - National Commission for the Certification of
Crane Operators 2024-2025
NCCCO Tower Crane Operator Certification Exam
Questions and Answers | 100% Pass Guaranteed |
Graded A+ |
Read All Instructions Carefully and Answer All the
Questions Correctly Good Luck: -
What is the single most dangerous thing an operator
can do to determine whether a crane can handle a
load? - =Answer>> Use tipping as a guide for capacity
More than 75% of chart capacity, close to power lines,
hoisting personnel, 2 crane lift, special procedures. -
=Answer>> Critical Lift
The angle of cable from center of sheave to inside walls
of hoist drum. - =Answer>> Fleet angle.
- =Answer>> D/d ratio
When two cables touch (multiple parts of line spin and
make contact) - =Answer>> Cabling
Even parts of line, shorter boom length, greater sheave
diameter. - =Answer>> Ways to reduce cabling
The amount of force, in pounds that a winch can pull
continously - =Answer>> Permissible line pull
What class is 6x25 wire rope. - =Answer>> IWRC
6x19
Safety factor for regular lay running rope working -
=Answer>> 3.5 to 1
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Safety factor for regular lay running rope erecting -
=Answer>> 3 to 1
Safety factor for rotation resistant wire rope -
=Answer>> 5 to 1
How many wraps must always remain on a load hoist or
boom hoist drum? - =Answer>> Two
What is the minimum length of tail on a wedge socket
when using rotation resistant wire rope. - =Answer>>
6 inches or 20x diameter.
Bird cagin, burns, over picking, missing tags, corrosion,
core petrision, high strand - =Answer>> Reasons for
taking wire rope out of service other than wear or
broken wires?
Types of shackles - =Answer>> anchor pin screw,
safety, sling saver, chain shackles
5% wear in critical areas, 10% any, twist, cracked, 5%
in throat, not more than 1/4. - =Answer>> Criteria for
taking a load hook out of service.
What is the efficiency of a wedge socket? -
=Answer>> 80%
What is the efficiency of a flemish eye? - =Answer>>
90%
What is the efficiency of a spelter socket? -
=Answer>> 100%
How are parts of line determined? - =Answer>> Gross
weight/ line pull of suspended load/ SWL or PLP
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