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Alternating Current Test - 17
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Alternating Current Test - 17
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  • Question 1/10
    4 / -1
    An inductance of 1 mH a condenser of 10μF and a resistance of 50Ω are connected in series. The reactances of inductor and condensers are same. The reactance of either of them will be
    Solutions

  • Question 2/10
    4 / -1
    An ac circuit consists of an inductor of inductance 0.5 H and a capacitor of capacitance 8μF in series. The current in the circuit is maximum when the angular frequency of ac source is
    Solutions

  • Question 3/10
    4 / -1
    In a region of uniform magnetic induction B = 10-2 tesla, a circular coil of radius 30 cm and resistance π2 ohm is rotated about an axis which is perpendicular to the direction of B and which forms a diameter of the coil. If the coil rotates at 200 rpm the amplitude of the alternating current induced in the coil is
    Solutions

  • Question 4/10
    4 / -1
    In a LCR circuit having L = 8.0 henry, C = 0.5 μF and R = 100 ohm in series. The resonance frequency in per second is
    Solutions

  • Question 5/10
    4 / -1
    The impedance of a circuit consists of 3 ohm resistance and 4 ohm reactance. The power factor of the circuit is
    Solutions

  • Question 6/10
    4 / -1
    L, C and R denote inductance, capacitance and resistance respectively. Pick out the combination which does not have the dimensions of frequency
  • Question 7/10
    4 / -1
    The power factor of a good choke coil is
    Solutions

  • Question 8/10
    4 / -1
    An alternating current source of frequency 100 Hz is joined to a combination of a resistance, a capacitance and a coil in series. The potential difference across the coil, the resistance and the capacitor is 46, 8 and 40 volt respectively. The electromotive force of alternating current source in volt is
    Solutions

  • Question 9/10
    4 / -1
    L, C and R represent physical quantities inductance, capacitance and resistance respectively. The combination representing dimension of frequency is
    Solutions

  • Question 10/10
    4 / -1
    In a series circuit R = 300Ω, L = 0.9 H, C = 2.0µF and ω = 1000 rad/sec. The impedance of the circuit is
    Solutions

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