Questions And Correct Answers (Verified
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1. What is the primary purpose of a load chart on a crane?
A. To show fuel consumption
B. To indicate maximum safe lifting capacities
C. To display maintenance intervals
D. To outline operator licensing requirements
Answer: B
Rationales: Load charts define the crane’s rated capacity under
specific configurations to prevent overloading.
2. Who is responsible for ensuring a crane is safe to operate before
use?
A. The site supervisor only
B. The crane manufacturer
C. The crane operator
D. The safety officer
Answer: C
Rationales: Operators are legally responsible for confirming
equipment is safe before operation.
3. What factor most affects crane lifting capacity?
A. Paint color
B. Boom length and angle
, C. Operator experience
D. Weather forecast
Answer: B
Rationales: Boom length and angle directly influence leverage and
rated capacity.
4. What must be done before operating a crane near power lines?
A. Increase speed
B. Notify the utility and maintain minimum clearances
C. Shut down the crane
D. Ignore if insulated
Answer: B
Rationales: Electrical hazards require coordination and strict
clearance distances.
5. What is the function of outrigger pads?
A. Increase lifting speed
B. Reduce noise
C. Distribute load to the ground
D. Secure the hook
Answer: C
Rationales: Pads prevent excessive ground pressure and crane
instability.
6. What does a “two-block” condition mean?
A. Load exceeds capacity
B. Hook contacts the boom tip
C. Crane tilts sideways
D. Outriggers are uneven
Answer: B
, Rationales: Two-blocking can cause serious equipment damage
and accidents.
7. Which inspection must be completed at the start of every shift?
A. Annual inspection
B. Monthly inspection
C. Pre-operational inspection
D. Manufacturer audit
Answer: C
Rationales: Daily inspections identify immediate safety concerns.
8. What is the main purpose of a crane’s boom angle indicator?
A. Measure wind speed
B. Show boom length
C. Indicate boom angle for capacity calculation
D. Control swing speed
Answer: C
Rationales: Boom angle affects load capacity and safe operation.
9. When should a crane be taken out of service?
A. When fuel is low
B. When safety devices malfunction
C. When load charts are dirty
D. When operator changes shift
Answer: B
Rationales: Defective safety devices pose serious hazards.
10. What is the correct response to excessive wind conditions?
A. Increase counterweight
B. Continue cautiously
C. Stop operations