How many brake cylinder cutouts are found on M-7 cars per car?

Answer: B — Two

M-7 cars are designed with two brake cylinder cutouts per car. This configuration allows for effective maintenance and troubleshooting of the braking system. The presence of two cutouts provides redundancy, ensuring that if one cutout is not functioning properly, the other can still operationally support the braking procedure. This is particularly important for railway safety, where reliability of the brake system is paramount. The design reflects a balance between operational efficiency and safety, enabling quick isolation of brake cylinders for maintenance without compromising the overall braking effectiveness of the train. Understanding the number of brake cylinder cutouts is crucial for operational personnel, as it impacts procedures for troubleshooting and maintaining the train's braking system.