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Semi final Quiz

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1. What needs to be at least 10 inches above the object of area its protecting of lightning strikes




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2. Interposing relay




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3. Machine control relay




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4. A _______ DC motor has the highest starting torque characteristic




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5. Magnetic flux is densist and magnetic force is strongest




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6. Class one copper lightning protection terminals have a min.diameter of




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7. Class 2




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8. Ground Rods min. Depth




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9. 4th part




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10. Nema




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11. Disperses lightning strike safety to earth materials,ground rods electrodes,ground rings,radials




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12. When it is on a list published by an organization




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13. Lumen maintenance




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14. Slip rings




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15. 10%




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16. 5/8 inch




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17. Describes how long a light source will retain its own lumen output




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18. Equal potential




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19. 75' or lower smaller than class 2




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20. 63%





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