Phase Angles: Solving Homework Equations for Apprentices

[Shurbunkin]

Homework Statement

Im an apprentice electrition and my 2nd year principles exam is coming up. the question i ask is about Phase angles. It asks me to represent my data using a phase angle but in the book I am using there are no equations to show me how to get my phase angle. I am working on my inductance. it shows how much the current is leading the voltage. its all about being 'out of phase'

Homework Equations

the inductance equation is
XL=2pie(3.142)fL
XL - inductive reactance (ohms)
F - supply frequency (hertz)
L - Circuit inductance (henrys)

The Attempt at a Solution

i have attempted on the inductance equations but have not go any further. please help. I am very confused

 

[Jupiter6]

Homework Statement

Im an apprentice electrition and my 2nd year principles exam is coming up. the question i ask is about Phase angles. It asks me to represent my data using a phase angle but in the book I am using there are no equations to show me how to get my phase angle. I am working on my inductance. it shows how much the current is leading the voltage. its all about being 'out of phase'

Homework Equations

the inductance equation is
XL=2pie(3.142)fL
XL - inductive reactance (ohms)
F - supply frequency (hertz)
L - Circuit inductance (henrys)

The Attempt at a Solution

i have attempted on the inductance equations but have not go any further. please help. I am very confused

If you were to look at your input waveform and your output waveform, the distance between these would be your phase angle in pi-radians. I'm not sure what the title "electrician" means where you live...are you familiar with transfer functions?