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Alternating Current Test - 11
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Alternating Current Test - 11
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  • Question 1/10
    4 / -1
    In a L-C-R series circuit, the potential difference between the terminals of the inductance is 60 V, between the terminals of the capacitor is 30 V and that across the resistance is 40 V. Then, supply voltage will be equal to the
    Solutions

  • Question 2/10
    4 / -1
    The natural frequency of an L-C circuit is 125000 cycle/s. Then the capacitor C is replaced by another capacitor with a dielectric medium of dielectric constant K. In this case, the frequency decreases by 25 kHz. The value of K is
    Solutions

  • Question 3/10
    4 / -1
    Average power generated in an inductor connected to an AC source is
  • Question 4/10
    4 / -1
    In a series L-C-R circuit, resistance R =10Ω and the impedance Z =10Ω. The phase difference between the current and the voltage is
    Solutions

  • Question 5/10
    4 / -1
    A circuit consists of an inductance of 0.5 mH and a capacitor of 20 µF. The frequency of the L-C oscillations is approximately
    Solutions

  • Question 6/10
    4 / -1
    An inductor is connected to an AC source. When compared to voltage, the current in the lead wires
    Solutions

  • Question 7/10
    4 / -1
    A circuit has a resistance of 12 Ω and an impedance of 15 Ω. The power factor of the circuit will be
    Solutions

  • Question 8/10
    4 / -1
    The phase difference between the alternating current and emf is π/2 . Which of the following cannot be the constituent of the circuit?
  • Question 9/10
    4 / -1
    If the capacity of a condenser is 1 F, then its resistance in a DC circuit will be
    Solutions

  • Question 10/10
    4 / -1
    An L-C-R circuit of R =100Ω is connected to an AC source 100 V, 50 Hz. The magnitude of phase difference between current and voltage is 30°. The power dissipated in the L-C-R circuit is
    Solutions

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