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Alternating Current Test - 52
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Alternating Current Test - 52

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  • Question 1/10
    4 / -1
    In ac circuit of capacitance the current from potential is
  • Question 2/10
    4 / -1
    A coil of 200 Ω resistance and 1.0 H inductance is connected to an ac source of frequency 200 /2π Hz. Phase angle between potential and current will be
    Solutions

  • Question 3/10
    4 / -1
    Radio frequency choke uses core of
  • Question 4/10
    4 / -1
    The current in series LCR circuit will be maximum when ω is
  • Question 5/10
    4 / -1
    In a circuit L, C and R are connected in series with an alternating voltage source of frequency f. The current leads the voltage by 45°. The value of C is
    Solutions

  • Question 6/10
    4 / -1
    In an ac circuit the current
  • Question 7/10
    4 / -1
    In a choke coil, the reactance XL and resistance R are such that
    Solutions

  • Question 8/10
    4 / -1
    A transistor-oscillator using a resonant circuit with an inductor L (of negligible resistance) and a capacitor C in series produce oscillation of frequency f. If L is doubled and C is changed to 4C, the frequency will be
    Solutions

  • Question 9/10
    4 / -1
    A coil of inductive reactance 31 Ω has a resistance of 8 Ω. It is placed in series with a condenser of capacitative reactance 25 Ω. The combination is connected to an ac source of 110 volt. The power factorof the circuit is
    Solutions

  • Question 10/10
    4 / -1
    In an LCR series resonant circuit which one of the following cannot be the expression for the Q–factor
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