Overhead Crane Practice Test

How should a swinging load be controlled during operation?

1. By using a speed limiter

2. By checking the main switch

3. By adjusting the hoist speed

4. By applying friction brakes

The correct answer is: By checking the main switch

Controlling a swinging load during operation is crucial for safety and efficiency. Checking the main switch helps ensure that the crane's power supply is appropriately engaged and functioning before any lifting operation begins. This preliminary step is vital because a stable power supply can prevent sudden loss of control that may lead to swinging if the crane were to unexpectedly stop or lose power. While other methods can indeed help mitigate swinging loads, they are primarily reactive methods that deal with the consequences rather than preventing swinging from the outset. For instance, adjusting the hoist speed can provide more controlled movements, but it won’t directly address the behavior of the load once it starts swinging. Similarly, friction brakes can help in stopping or controlling the load after it has started swinging, but again, they do not prevent the swing from occurring during operation. Therefore, ensuring that the crane's power and operational systems are correctly set up (which is verified by checking the main switch) is the best practice for managing swinging loads effectively.