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  1. S

    2391 question

    got theses papers and answer from the college i done the coarse in
  2. S

    2391 question

    the answers never came out as planned (1.15x60)+(1.15x60)/4= 34.5m ohm and (1.15+1.15)x60/1000 = 0.138 ohms
  3. S

    2391 question

    these are the answers i was given (1.15x60)+(1.15x60) 1.15+1.15x60 divided by diveded by 4 = 34.5 m ohm and 1000 = 0.138 ohms so...
  5. S

    2391 question

    two identical conductors are to be connected in parellel. each conductor measures 60m in length and has a resistance of 1.15 Mohm/m what is the combined resistance of the condutors show all calculations I have 2 seperate past papers and answers with this question on and have 2 different...
  6. S

    cg2391 questions

    thanks for that its a great help
  7. S

    cg2391 questions

    i feel like ive looked cover to cover through this book and i cant find it and the questions says you cant disconect the surge protection
  9. S

    cg2391 questions

    can anyone help im revising for 2391 and got stuck on a few questions 1st being :what are the tests for insulation resistance on a 230 v circuit containing surge protection and what conductors are tested between if any1 could help be really gratfull

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