Mr Technical Difficulty
Newbie level 2
I'm currently trying to learn the equations for inductive reactance, which was going well until I hit a brick wall with the following question:
“A reactor allows a current of 15 Amps to flow from a 230 Volt 50 Hertz supply. Determine the current which will flow at the same voltage if the frequency changes to (A) 45 Hz and (B) 55 Hz. Ignore the resistance.”
Having looked up the answers in the book, I know that they are (A) 15.97 Amps and (B) 13.07 Amps. What the book doesn't tell me however is the formulae used to ascertain these answers. I understand the reasoning for a higher frequency causing a lower current, but in four hours have not been able to figure out how to work it out precisely from the given information.
If any one has any insight into what formulae is used to give these answers it'd be much appreciated, as it's driving me crackers x2!
“A reactor allows a current of 15 Amps to flow from a 230 Volt 50 Hertz supply. Determine the current which will flow at the same voltage if the frequency changes to (A) 45 Hz and (B) 55 Hz. Ignore the resistance.”
Having looked up the answers in the book, I know that they are (A) 15.97 Amps and (B) 13.07 Amps. What the book doesn't tell me however is the formulae used to ascertain these answers. I understand the reasoning for a higher frequency causing a lower current, but in four hours have not been able to figure out how to work it out precisely from the given information.
If any one has any insight into what formulae is used to give these answers it'd be much appreciated, as it's driving me crackers x2!