Alternating current Flashcards
What is Alternating current
A current which periodically varies from positive to negative and changes its magnitude continuously with time
What is peak voltage or peak current (Vo/Io)
The maximum value of alternating current or voltage
What equestions are used in sinusoidal representions
I = Iosin(wt)
V =Vosin(wt)
What is angular frequency (w)
W=2pif
Or
W= 2pi/T
what is R.M.S of an alternating current
The value of a constant current that produces the same power in a resistor as the alternating current
What is R.M.S value of an alternating voltage
The value of a constant voltage that produces the same power in a resistor as the alternating voltage
What is rms voltage and rms current
r.m.s voltage= Vo/Square root 2
r.m.s current= Io/Square root 2
What is r.m.s
The steady direct current or voltage that delivers the same average power in a resistor as the alternating current or voltage
What are the equations of power
P=IV
P=I^2R
P=V^2/R
What is rectification
Process of converting alternating current and voltage into direct current and voltage
What produces a half wave rectifier
Diode
What produces a full wave rectifier
4 diodes
What is smoothing
The reduction in variation of the output voltage or current
