Cast Pre-test Welcome to your Cast Pre-test Name Email 1. Name the four most common transmission voltagas on 1393 jurisdiction? 34.5 kV 69 KV 138 KV 230 KV 2. Name the three most common three phase voltages on 1393 jurisdiction? 4,160 volts 12,470 volts 13,800 volts 3. The neutral wire on any energkzed wye primary system may be opened safely? No 4. is It possible to ground one phase of energized delta primary? Yes 5. is It possible to connect two transformers in parallel that are hooked up to two diff phases? No 6. What is the first stap in taking a regulator out of service? Place in the neutral position according to the manufacturers specifications 7. A transformer that is paralleled with another energized transformer is still hot when disconnected from the primary. Yes 8. Capacitor terminals should be grounded and shunted with a plece of copper prior to working on them. Yes 9. Grounds should be installed on the neutral first and removed from the neutral last. True 10. The proper way of connecting an aluminum conductor to a copper conductor is? Aluminum over Copper 11. Select two reasons why an Electric utility will use capacitors on their system? To correct lagging power factor To offset induction losses on the line 12. When grounding a de energized line the proper sequence is to connect the grounding equipment to the line first False 13. The average knot will have about what percentage of the ropes strength? 50-60% 14. In which of the following electrical systems may a single primary bushing transformer be used? Multi-grounded system or wye grounded system 15. The purpose of a transformer is to change electrical energy at one potential to electrical energy to another potential. True 16. Generally speaking tränsformers may be divided into two types. Additive and Subtractive 17. How long is it necessary to continue artificial respiration on a victim of electrical shock? Until proper breathing has been restored or a doctor pronounces the victim dead 18. Select two steps when taking a regulator out of service? Place a regulator in neutral position according to instructions Bypass the regulator 19. What two purposes does oil do in a transformer? Cooling and Insulation 20. How often should rubber gloves be field tested? Every time before use 21. The phase to phase (nominal voltage) voltage on a 12,470 volt wye primary is? 12,470 volts 22. What would you need to do in order to change the rotation of any three phase bank? Swap any two of the three secondaries. 23. What kind of meter do yau use to check rotation? Rotation meter 24. What meter would you need to use to check if you could parallel two phases together? Phasing sticks 25. What does a Capacitar do to the voltage on the line? Boasts voltage 26. At the station what kind of transformer do you use in order to get a true voltage? Potential transformer 27. On a running corner installation do you rake the pole toward or away from the down guy? Toward the down guy 28. All tie wires should be fully annealed and of the same type of metal as the conductor being tied, True 29. Should you cut the straps and stakes before installing the steel becky around the pole when unloading poles. No 30. What unit of measure is used to measure current? Amps 31. Pick the formulas that are correct Power= vaitage X time Watthoure watt X hour Powers voltage X current Voltage-current. X resistance 32. What is the difference between a class 2 and a class 6 pole? Class 2 poles are larger in diameter that class 6 poles 33. What is the formula for setting a pole? 10% plus 2 feet 34. What are two types of arrestors? Surge and Valve 35. Can you put two different phases on a parking stand? No you can't put two different phases on the sale parking stand 1 out of 35 Time is Up! Time's up
