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Review paper 1 - tutorial 1

Review paper 1 - tutorial 1

by Deleted user -
Number of replies: 3

Looking for someone to explain how they got the answers to a few questions in the review from tutorial 1  

8) An underground cable is connected to a 240 ac supply. Determine the max value of voltage that the cable must withstand ? 

The power curve frequency of a 400V 50Hz supply is ? 

23) A star connected ac generator develops 11000V/phase. Determine the MVA rating of the machine if the current/phase is 50A. ? 


In reply to Deleted user

Re: Review paper 1 - tutorial 1

by Deleted user -
8) max value here i assumed was based off the RMS Voltage being 240V so the Max/Peak Voltage calc is 240 / 0.707

8) no idea what a power curve frequency is or how it differs from normal frequency, Q for God

24) still working on this too. Is it something to do with that 1.732 (root3) calc for 3 phase