mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-23 21:11:08 +00:00
0fd1ccb133
* Adding inductive reactance calculation * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * from math import pi * 0007957747154594767 * 36420441699332 * 2199114857512855 Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: Christian Clauss <cclauss@me.com>
70 lines
1.9 KiB
Python
70 lines
1.9 KiB
Python
# https://en.wikipedia.org/wiki/Electrical_reactance#Inductive_reactance
|
|
from __future__ import annotations
|
|
|
|
from math import pi
|
|
|
|
|
|
def ind_reactance(
|
|
inductance: float, frequency: float, reactance: float
|
|
) -> dict[str, float]:
|
|
"""
|
|
Calculate inductive reactance, frequency or inductance from two given electrical
|
|
properties then return name/value pair of the zero value in a Python dict.
|
|
|
|
Parameters
|
|
----------
|
|
inductance : float with units in Henries
|
|
|
|
frequency : float with units in Hertz
|
|
|
|
reactance : float with units in Ohms
|
|
|
|
>>> ind_reactance(-35e-6, 1e3, 0)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValueError: Inductance cannot be negative
|
|
|
|
>>> ind_reactance(35e-6, -1e3, 0)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValueError: Frequency cannot be negative
|
|
|
|
>>> ind_reactance(35e-6, 0, -1)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValueError: Inductive reactance cannot be negative
|
|
|
|
>>> ind_reactance(0, 10e3, 50)
|
|
{'inductance': 0.0007957747154594767}
|
|
|
|
>>> ind_reactance(35e-3, 0, 50)
|
|
{'frequency': 227.36420441699332}
|
|
|
|
>>> ind_reactance(35e-6, 1e3, 0)
|
|
{'reactance': 0.2199114857512855}
|
|
|
|
"""
|
|
|
|
if (inductance, frequency, reactance).count(0) != 1:
|
|
raise ValueError("One and only one argument must be 0")
|
|
if inductance < 0:
|
|
raise ValueError("Inductance cannot be negative")
|
|
if frequency < 0:
|
|
raise ValueError("Frequency cannot be negative")
|
|
if reactance < 0:
|
|
raise ValueError("Inductive reactance cannot be negative")
|
|
if inductance == 0:
|
|
return {"inductance": reactance / (2 * pi * frequency)}
|
|
elif frequency == 0:
|
|
return {"frequency": reactance / (2 * pi * inductance)}
|
|
elif reactance == 0:
|
|
return {"reactance": 2 * pi * frequency * inductance}
|
|
else:
|
|
raise ValueError("Exactly one argument must be 0")
|
|
|
|
|
|
if __name__ == "__main__":
|
|
import doctest
|
|
|
|
doctest.testmod()
|