100- Questions And Correct Detailed Answers Questions
From Real Exams Already Graded A+
Exam Type: Multiple Choice
Purpose: Revision & Final Preparation
Content Covered
• Rigging fundamentals
• Load calculations & weight estimation
• Crane charts & capacity determination
• Wire ropes, slings, shackles & hardware
• Hoisting signals & communication
• Tower erection & dismantling safety
• OSHA / ANSI rigging principles
• Fall protection & personnel safety
• Weather & environmental considerations
• Inspection & hazard control
1. The primary responsibility of a Certified Tower Rigger (CTR) is to:
A. Operate the crane
B. Inspect power lines
C. Safely rig and control loads during lifting operations
D. Supervise site paperwork
, Correct answer focuses on safe rigging and load control, not crane
operation or administration.
2. The Working Load Limit (WLL) of rigging equipment is best described as:
A. The breaking strength
B. Half the breaking strength
C. The maximum safe load allowed during use
D. The test load applied at manufacture
WLL already includes a safety factor and must never be exceeded.
3. Which sling angle produces the greatest tension in a sling leg?
A. 90°
B. 60°
C. 45°
D. 30°
As sling angle decreases, tension increases significantly.
4. A crane load chart shows rated capacity based on:
A. Maximum boom length only
B. Operator experience
C. Boom length and operating radius
D. Wind speed
Crane capacity decreases as radius increases.
5. The center of gravity of a load is the point where:
A. The load looks balanced
B. The entire weight of the load is concentrated
C. Rigging is attached
, D. The heaviest component is located
Lifting should always account for true center of gravity.
6. Which knot is commonly used for temporary rigging but not recommended
for overhead lifting?
A. Bowline
B. Square knot
C. Clove hitch
D. Sheet bend
Clove hitches can slip under load.
7. Wire rope clips must be installed:
A. Randomly spaced
B. Saddle on the dead end
C. Saddle on the live end (“Never saddle a dead horse”)
D. With one clip only
Incorrect installation significantly reduces rope strength.
8. A shackle should be removed from service if:
A. Paint is chipped
B. Pin threads are damaged or bent
C. It has surface dirt
D. It has manufacturer markings
Structural defects compromise load integrity.
9. Tag lines are used primarily to:
A. Increase lifting capacity
B. Control load rotation and movement
C. Replace hand signals