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Alternating Current Test - 19
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Alternating Current Test - 19
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  • Question 1/10
    4 / -1
    In the non-resonant circuit, what will be the nature of the circuit for frequencies higher than the resonant frequency
    Solutions

  • Question 2/10
    4 / -1
    In a series LCR circuit, resistance R = 100 Ω and the impedance Z = 20 Ω. The phase difference between the current and the voltage is
    Solutions

  • Question 3/10
    4 / -1
    An LC circuit contains a 20 mH inductor and a 50 μF capacitor with an initial charge of 10 mC. The resistance of the circuit is negligible. At the instant the circuit is closed be t = 0. At what time is the energy stored completely magnetic
    Solutions

  • Question 4/10
    4 / -1
    An ideal choke draws a current of 8 A when connected to an ac supply of 100 V, 50 Hz. A pure resistor draws a current of 10 A when connected to the same source. The ideal choke and the resistor are connected in series and then connected to the ac source of 150 V, 40 Hz. The current in the circuit becomes
    Solutions

  • Question 5/10
    4 / -1
    In the circuit shown below, the ac source has voltage V = 20 cos (ωt) volts with ω = 2000 rad/sec. The amplitude of the current will be nearest to

    Solutions

  • Question 6/10
    4 / -1

    Solutions

  • Question 7/10
    4 / -1
    Power factor is maximum in an LCR circuit when
    Solutions

  • Question 8/10
    4 / -1
    A resistance of 40 ohm and an inductance of 95.5 millihenry are connected in series in a 50 cycles/second ac circuit. The impedance of this combination is very nearly
    Solutions

  • Question 9/10
    4 / -1

    Solutions

  • Question 10/10
    4 / -1
    The power factor of an ac circuit having resistance (R) and inductance (L) connected in series and an angular velocity ω is
    Solutions

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