ELECTRICIAN 1st YEAR MODULE – Basic wiring practice

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1. What is the fusing factor for high rupturing capacity fuses (HRC)?

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2. Which circuit breaker is used above 100A current?

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3. Which accessories operate portable appliances?

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4. What type of fuse is this?

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5. Where is the phase conductor looped in a looping wiring system?

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6. What is the application of DC series MCB?

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7. Which conduit type is used for gas-tight explosive installations?

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8. What is the primary function of a circuit breaker?

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9. What is this BIS symbol called?

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10. What does the symbol marked 'X' indicate?

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11. What is this type of wiring called?

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12. What is a group of four insulated conductors called?

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13. Why is separate wiring recommended for home theatre and power wiring?

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14. Which relay type works with both AC and DC?

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15. Which type of MCB is suitable for halogen lamps?

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16. Which type of load is protected by the L-series MCB?

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17. What is the function of bimetallic strip in MCB?

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18. What does AWG stand for?

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19. Why is loop-in method preferred in domestic wiring?

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20. What is the fusing factor for rewireable fuse?

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21. Why is copper fuse wire tin-coated?

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22. Which wiring is suitable for temporary installations?

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23. What is the purpose of the fuse cut-out at incoming power supply?

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24. What is the name of this wiring circuit symbol?

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25. Which equipment uses 'L' series MCB?

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26. Why is the tree system of wiring most suitable for multistoried buildings?

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27. Which lamp holder is used for lamps above 300 watts?

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28. Calculate the earth fault loop impedance if ELCB tripping current is 30 mA?

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29. Where is the Iron Clad Double Pole (ICDP) main switch typically used?

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30. What is this accessory symbol called?

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31. What is this diagram called?

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32. What is the name of the conduit accessory?

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33. How are conduit pipes specified?

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34. What does MCB stand for?

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35. What does this symbol indicate?

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36. Which category does fuse accessories belong to?

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37. Where is the Tree system of wiring most suitable?

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38. What is this wiring circuit application?

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39. What happens to earth resistance if earth pipe length increases?

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40. What does ECC stand for?

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41. What is the name of this electrical accessory?

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42. What is the purpose of an ELCB?

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43. How many link clips are packed per BIS rules in cardboard boxes?

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44. What is the term for the time taken by a fuse to interrupt a faulty circuit?

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45. What is the name of this type of relay?

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46. Which electrical accessory belongs to general classification?

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47. How many two-way switches with intermediate switch are needed to control one lamp from three places?

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48. What is the purpose of flexible cords in domestic wiring?

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49. What is this lighting circuit called?

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50. What is the maximum PVC conduit size for safe cold bending?

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51. What is this electrical appliance accessory called?

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52. Why shouldn't home theatre wiring run with power wiring?

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53. What protection does a residual current circuit breaker offer?

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54. What happens when using low current rated cable for higher current loads?

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55. What is the standard thread length on rigid conduits as per BIS?

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56. What is the purpose of a circuit diagram in wiring installation?

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57. What type of diagram is this?

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58. Which type of switch is used in the circuit?

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59. Which tool is used to bend conduits?

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60. What is this wiring method called?

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61. Which material is used as filler for fixing screw holes on ceilings?

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62. Which insulation is needed for proper function and basic protection?

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63. What type of relay is this?

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64. How are ceiling roses classified?

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65. How many two-way switches are required in godown wiring to control four lamps?

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66. What is the purpose of underwriter's knot for pendent holder connection?

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67. What is a die stock set used for?

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68. What type of wiring is this?

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69. What is the advantage of concealed wiring?

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