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Alternating Cur...

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  • Question 1
    4 / -1

    An ac source of variable frequency f is connected to an LCR series circuit. Which of the graphs in figure represents the variation of current I in the circuit with frequency f

  • Question 2
    4 / -1

    The r.m.s. voltage of the wave form shown is

  • Question 3
    4 / -1

    A constant voltage at difference frequencies is applied across a capacitance C as shown in the figure. Which of the following graphs correctly depicts the variation of current with frequency

  • Question 4
    4 / -1

    The output current versus time curve of a rectifier is shown in the figure. The average value of output current in this case is

  • Question 5
    4 / -1

    The current \'i\' in an inductance coil varies with time \'t\' according to following graph
    Which of the following plots shows the variation of voltage in the coil

  • Question 6
    4 / -1

    Two sinusoidal voltages of the same frequency are shown in the diagram. What is the frequency, and the phase relationship between the voltages

  • Question 7
    4 / -1

    The voltage across a pure inductor is represented by thefollowing diagram. Which of the following diagramswill represent the current

  • Question 8
    4 / -1

    In pure inductive circuit, the curves between frequency f and reciprocal of inductive reactance 1 /XL is

  • Question 9
    4 / -1

    The current i in the circuit shown here varies with time t is

  • Question 10
    4 / -1

    The resonance point in XL – f and XC – f curves is

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