NCCCO (National Commission for the Certification of Crane Operators) Practice Test
NCCCO - National Commission for the Certification of Crane Operators NCCCO Tower Crane Operator Test 2
What is the purpose of the slewing brake on a tower crane?
Select your answer
A
To control the boom angle
B
To control the hoisting speed
C
To stop the crane's rotation
D
To engage the emergency stop
Hint