| 1. | Variable speed fans use Direct Current style motor technology, or ECM Motor.
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| 2. | The voltage used was 2000V direct current, and the distance 57 kilometres.
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| 3. | High-voltage direct current ( HVDC ) transmission lines are either bipolar systems.
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| 4. | It is also used for high-voltage direct current over submarine power cables.
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| 5. | Alternating-current transmission lines have losses that do not occur with direct current.
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| 6. | The power station used direct current and operated at a single voltage.
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| 7. | In practice, direct current methods are more typically used to determine resistance.
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| 8. | A direct current flows uniformly throughout the cross-section of a uniform wire.
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| 9. | Direct current could not easily be converted to higher or lower voltages.
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| 10. | Lown devised a defibrillator that utilized direct current instead of alternating current.
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