Alternating current Flashcards

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1
Q

What is Alternating current

A

A current which periodically varies from positive to negative and changes its magnitude continuously with time

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2
Q

What is peak voltage or peak current (Vo/Io)

A

The maximum value of alternating current or voltage

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2
Q

What equestions are used in sinusoidal representions

A

I = Iosin(wt)
V =Vosin(wt)

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3
Q

What is angular frequency (w)

A

W=2pif
Or
W= 2pi/T

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4
Q

what is R.M.S of an alternating current

A

The value of a constant current that produces the same power in a resistor as the alternating current

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5
Q

What is R.M.S value of an alternating voltage

A

The value of a constant voltage that produces the same power in a resistor as the alternating voltage

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6
Q

What is rms voltage and rms current

A

r.m.s voltage= Vo/Square root 2

r.m.s current= Io/Square root 2

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7
Q

What is r.m.s

A

The steady direct current or voltage that delivers the same average power in a resistor as the alternating current or voltage

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8
Q

What are the equations of power

A

P=IV
P=I^2R
P=V^2/R

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9
Q

What is rectification

A

Process of converting alternating current and voltage into direct current and voltage

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10
Q

What produces a half wave rectifier

A

Diode

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11
Q

What produces a full wave rectifier

A

4 diodes

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12
Q

What is smoothing

A

The reduction in variation of the output voltage or current

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