71. As shown in the illustration of a DC diesel-electric propulsion drive system, what would be the set up contactor configurations if #1 M/E is to be secured, so that only #2 M/E diesel-generator is set up to supply both propulsion motors

To secure #1 M/E and have only #2 M/E supply both propulsion motors, contactors G2 and S1 must be closed, while G1 and S2 must be open, creating a complete circuit from #2 generator through the motors and back to #2 generator while isolating #1 generator.