Question

What must be provided across the top of the head block to prevent the cable from jumping out of the sheaves?

1) Tension
2) Lubrication
3) Support
4) Insulation

Answer 1

Support must be provided across the top of the head block to prevent the cable from jumping out of the sheaves. Without proper support, cables can experience unnecessary movement and tension.

Step-by-step explanation:

The correct answer to the question is 3) Support.

Across the top of the head block, support must be provided to prevent the cable from jumping out of the sheaves. This support can be in the form of a support structure or guide, such as a clamp or bracket, that keeps the cable securely in place.

Without proper support, cables can experience unnecessary movement and tension, which can lead to potential issues such as cable damage or disconnection from the sheaves.