What is the brake cylinder pressure in B3?

The brake cylinder pressure in B3 is correctly identified as 109 kPa. This value typically reflects the standard operational pressure for the specific braking system being referenced, which is essential for proper functioning. Maintaining the right brake cylinder pressure ensures effective braking performance, stability, and safety of the traction system.

In many traction systems, different brake settings or configurations may correspond to varied pressures based on operational requirements, such as the weight of the load, the type of railcar, and the gradients affecting the journey. Knowing the standard pressure for a specific configuration allows engineers and operators to establish a baseline for performance, enabling them to diagnose and troubleshoot issues more effectively should they arise.

Understanding these pressure values is crucial for safety inspections and maintenance routines, helping ensure that the braking components are functioning properly and within safety margins. The other options represent alternative pressures that would likely not support the optimal operation of the specific traction system in question, thereby reinforcing the importance of knowing the correct standard pressure for effective maintenance and operation.