Question

The positions of the ME-23 brake valve handle in their respective order, from left to right are Release, ________ Service, Emergency.

1) Apply
2) Hold
3) Release
4) Emergency

Answer 1

In the ME-23 brake valve handle sequence, the missing position between Release and Service is called Minimum Reduction, which is used for small reductions in brake pipe pressure to control train speed.

Step-by-step explanation:

The positions of the ME-23 brake valve handle in their respective order, from left to right, are Release, Minimum Reduction, Service, Emergency. The correct answer to fill in the blank would be Minimum Reduction, which is a position used to make a small reduction in train brake pipe pressure to control the speed of the train.

This is one of the precise handle positions that allows the engineer to manage braking force during different phases of train operation. The appropriate sequence, therefore, is Release, Minimum Reduction, Service, and Emergency.