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1. What is the primary purpose of a crane load chart?
A. To estimate fuel consumption
B. To determine maximum safe lifting capacity
C. To calculate travel speed
D. To schedule maintenance intervals
Answer: B
The load chart provides the crane’s rated lifting capacities under various
configurations and conditions.
2. Who is responsible for determining that the load is within the
crane’s rated capacity?
A. Site supervisor
B. Rigger
,C. Crane operator
D. Safety inspector
Answer: C
The operator must verify the lift is within safe operating limits using the
load chart.
3. What is the first action before operating a tower crane each day?
A. Start lifting test loads
B. Perform a pre-operation inspection
C. Grease all moving parts
D. Increase counterweight
Answer: B
A daily inspection ensures the crane is safe and functional before use.
4. What condition most directly reduces crane lifting capacity?
A. Wind speed
B. Operator experience
C. Paint condition
D. Cab temperature
,Answer: A
High wind loads reduce stability and safe lifting capacity.
5. What is the function of a crane’s anti-collision system?
A. Increase lifting speed
B. Prevent cranes from striking each other
C. Measure load weight
D. Extend boom length
Answer: B
It prevents structural contact between cranes operating in overlapping
zones.
6. What must be confirmed before lifting any load?
A. Weather forecast
B. Load weight and center of gravity
C. Paint condition of hook
D. Operator shift length
Answer: B
Knowing the load weight and balance is essential for safe lifting.
, 7. What is a key hazard of exceeding crane load limits?
A. Increased efficiency
B. Structural failure or collapse
C. Reduced maintenance
D. Faster rotation
Answer: B
Overloading can cause catastrophic structural failure.
8. What is the purpose of a tag line during a lift?
A. Increase lifting speed
B. Control load swing
C. Measure load weight
D. Support crane structure
Answer: B
Tag lines help stabilize and guide loads during movement.
9. Which weather condition is most dangerous for tower crane
operation?