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Define average value of alternating curr...

Define average value of alternating current . Derive an expression for it .

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Define root mean square value of alternating current and derive an expression for it . How is it related to mean value of alternating current ?

Rms value of an alternating current .

Knowledge Check

  • The rms value of an alternating current

    A
    is equal to 0.707 times peak value
    B
    is equal to 0.636 times peak value
    C
    is equal sqrt2 times the peak value
    D
    none of the above

  • The r.m.s. value of an alternating current is

    A
    less than zero
    B
    equal to its peak value
    C
    less than its peak value
    D
    greater than its peak value

  • The average value of alternating current over a complete cycle is

    A
    zero
    B
    1 rms
    C
    ` (I ) / ( sqrt 2 ) `
    D
    ` 2I `

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