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Question 1
Eye splice strength reduction is typically what percent?
Correct Answer:
15-20%
Explanation:
Creating an eye in a rope changes how the fibers carry load. The splice rearranges the strands and introduces a localized area where load paths aren’t as direct, increasing friction and creating a region that can’t transfer as much force as the straight rope. Because of this, the rope’s effective strength is reduced by about 15 to 20 percent when an eye splice is properly made. In practice, you’ll typically use 80–85% of the rope’s nominal breaking strength for calculations after an eye splice. Exact reductions vary with rope material, construction, diameter, and splice quality, but 15–20% is the standard figure used in rigging.
Question 2
How many cubic inches are in one cubic foot?
Correct Answer:
1728
Explanation:
Volume scales with the cube of the linear dimensions. A cubic foot has 1 foot on each side, and since 1 foot equals 12 inches, convert to inches in every direction: 12 inches × 12 inches × 12 inches. Multiply to get 1728 cubic inches. The other numbers represent linear or area measurements, not a full cube’s volume: 12 is a single dimension, 144 is an area (12 × 12), and 5184 isn’t the volume of a 1-foot cube in cubic inches. So the correct result is 1728 cubic inches.
Question 3
Which of the following best describes the effect on nominal strength when rope is bent around sheaves or hooks?
Correct Answer:
Nominal strength is reduced
Explanation:
When rope is bent around sheaves or hooks, the load path becomes uneven and the rope experiences bending stresses in addition to the tension. The fibers on the outer side are pulled more and the inner fibers are compressed, creating a concentration of stress that reduces the rope’s ability to carry load. This bending damage accumulates with tighter bends or more wraps, so the rope’s nominal strength—its rated breaking strength in a straight pull—decreases once it’s bent. That’s why rigging guidelines specify minimum bend radii and avoid sharp bends to preserve strength.
Question 4
What does a 2 short audible signal indicate when the crane is moving?
Correct Answer:
Go ahead
Explanation:
Two short audible signals are a clear go-ahead from the signaler to the crane operator. They indicate that the path is clear and the operator should continue the planned movement in the indicated direction. This pattern serves as a positive instruction to proceed; different signals would be used to stop or pause, so hearing two short signals means keep moving as you were planned. Always stay attentive to the signaler and confirm any changes if hazards arise.
Question 5
Deflection of the boom and pendant stretch will increase which of the following?
Correct Answer:
Counterweight load
Explanation:
When the boom deflects and the pendant stretches under load, the line of action of the lifting system shifts and the load creates a larger overturning moment about the crane’s base. To keep the crane balanced and prevent tipping, the counterweight must provide a greater resisting moment, so the counterweight load increases. The other factors—load swing radius, lifting height, and the physical boom length—don’t inherently rise just from deflection and pendant stretch, since they’re determined by different aspects of the crane’s geometry and operation.
Question 1
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About this Exam

Prepare with the EPRI Rigger’s Handbook Practice Test practice quiz. This question bank includes 10 questions covering strength, cubic, crane, boom, and threaded. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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EPRI Rigger’s Handbook Practice Test

This practice set contains 10 questions from the matching question bank and focuses on strength, cubic, crane, boom, and threaded. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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