23, representing the " differential " method, B is the sending battery, B 1 a resistance equal to that of the battery, R a rheostat and C an adjustable condenser. [Please select]
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A resistance for the arc may be made by running the current through a water rheostat or through 15 ft. [Please select]
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One wire runs to the switch, B, and the other connects with the water rheostat, which is used for reducing the current. [Please select]
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[Illustration: Battery Rheostat] ** Automatic Time Switch [80] This device may be used to either open or close the circuit at any desired time. [Please select]
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I have been using the same method for my water rheostat (homemade). [Please select]
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This will reduce 40 to 50 volts down to 5 or 10 volts for short lengths [Illustration: Simple Rheostat] of time. [Please select]
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The motor can be controlled by a small three or four-point battery rheostat. [Please select]
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