Tower Crane Operator Certification Exam Exam
QUESTIONS WITH CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A|INSTANT
DOWNLOD PDF
1. What is the primary purpose of a tower crane?
A. Transport workers
B. Mix concrete
C. Lift and move heavy materials vertically and horizontally
D. Excavation
Rationale: Tower cranes are designed to lift and place heavy
construction materials.
2. The horizontal arm that carries the load is called the:
A. Mast
B. Counterweight
C. Jib
D. Slewing unit
Rationale: The jib extends horizontally to carry and position the
load.
3. Which part supports the crane vertically?
A. Jib
B. Counterweight
C. Slew ring
D. Mast
Rationale: The mast provides vertical height and stability.
,4. Counterweights are used to:
A. Increase lifting speed
B. Reduce wind impact
C. Balance the crane against the lifted load
D. Extend the jib
Rationale: Counterweights prevent the crane from tipping.
5. The motion that allows the crane to rotate left or right is
called:
A. Hoisting
B. Luffing
C. Trolleying
D. Slewing
Rationale: Slewing rotates the crane around its mast.
6. The trolley on a crane:
A. Raises the load vertically
B. Rotates the crane
C. Moves the load along the jib
D. Supports the counterweight
Rationale: The trolley allows horizontal positioning along the
jib.
7. Which type of tower crane has a jib that can change angle?
A. Hammerhead
B. Self-erecting
C. Fixed jib
D. Luffing jib
, Rationale: Luffing jib cranes adjust the angle to work in tight
spaces.
8. The hoist mechanism controls:
A. Slewing
B. Trolley travel
C. Raising and lowering the load
D. Counterweight adjustment
Rationale: Hoisting moves the load vertically.
9. The slewing unit is typically located:
A. Ground level
B. Counterweight
C. Atop the mast
D. Inside the cab
Rationale: It allows rotation at the mast’s top.
10. The base of the crane must be:
A. Lightweight
B. Movable
C. Solid and secure on a foundation
D. Elevated only
Rationale: A stable foundation ensures crane safety.
11. Which part prevents the load from slipping off the hook?
A. Hoist rope
B. Load chain
C. Hook latch
D. Trolley
Rationale: Hook latches secure the sling or hook connection.
QUESTIONS WITH CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A|INSTANT
DOWNLOD PDF
1. What is the primary purpose of a tower crane?
A. Transport workers
B. Mix concrete
C. Lift and move heavy materials vertically and horizontally
D. Excavation
Rationale: Tower cranes are designed to lift and place heavy
construction materials.
2. The horizontal arm that carries the load is called the:
A. Mast
B. Counterweight
C. Jib
D. Slewing unit
Rationale: The jib extends horizontally to carry and position the
load.
3. Which part supports the crane vertically?
A. Jib
B. Counterweight
C. Slew ring
D. Mast
Rationale: The mast provides vertical height and stability.
,4. Counterweights are used to:
A. Increase lifting speed
B. Reduce wind impact
C. Balance the crane against the lifted load
D. Extend the jib
Rationale: Counterweights prevent the crane from tipping.
5. The motion that allows the crane to rotate left or right is
called:
A. Hoisting
B. Luffing
C. Trolleying
D. Slewing
Rationale: Slewing rotates the crane around its mast.
6. The trolley on a crane:
A. Raises the load vertically
B. Rotates the crane
C. Moves the load along the jib
D. Supports the counterweight
Rationale: The trolley allows horizontal positioning along the
jib.
7. Which type of tower crane has a jib that can change angle?
A. Hammerhead
B. Self-erecting
C. Fixed jib
D. Luffing jib
, Rationale: Luffing jib cranes adjust the angle to work in tight
spaces.
8. The hoist mechanism controls:
A. Slewing
B. Trolley travel
C. Raising and lowering the load
D. Counterweight adjustment
Rationale: Hoisting moves the load vertically.
9. The slewing unit is typically located:
A. Ground level
B. Counterweight
C. Atop the mast
D. Inside the cab
Rationale: It allows rotation at the mast’s top.
10. The base of the crane must be:
A. Lightweight
B. Movable
C. Solid and secure on a foundation
D. Elevated only
Rationale: A stable foundation ensures crane safety.
11. Which part prevents the load from slipping off the hook?
A. Hoist rope
B. Load chain
C. Hook latch
D. Trolley
Rationale: Hook latches secure the sling or hook connection.
