Engineer Training

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Front #77

ABTH 105.10

A crew has just finished building their DP train. Before initially moving the train after linking, the crew must ensure that the SAME/OPPOSITE switch is in the proper position by starting the train�

With power from only the lead consist
With power from both the lead consist and remote DP consist
With power from only the remote DP consist

Back #77

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ABTH 105.10

Answer: With power from only the remote DP consist

Feedback:
This is known as a "bump" test. With the throttle in Idle on the lead consist, use the DP screen to separate the lead consist from the remote DP consist. Increase throttle on the remote DP consist. If the train moves forward, the Same/Opposite switch is in the correct position. If it moves backward, it is in the wrong position. It is important to know if the DP locomotive being linked to is facing the same direction as your lead locomotive.