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Alternating Current Test - 10
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Alternating Current Test - 10
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  • Question 1/10
    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 2/10
    4 / -1
    A 50 V AC is applied across an R-C (series) network. The rms voltage across the resistance is 40 V, then the potential across the capacitance would be
    Solutions

  • Question 3/10
    4 / -1
    A pure inductive coil of 30 mH is connected to an AC source of 220 V, 50 Hz. The rms current in the coil is
    Solutions

  • Question 4/10
    4 / -1
    Same current is flowing in two alternating circuits. The first circuit contains only inductance and the other contains only a capacitor. If the frequency of the emf of AC is increased, the effect on the value of the current
    Solutions

  • Question 5/10
    4 / -1
    The maximum value of AC voltage in a circuit is 707 V. Its rms value is
    Solutions

  • Question 6/10
    4 / -1
    If an alternating voltage is represented as E= 141 sin (628 t), then the rms value of the voltage and the frequency are respectively
    Solutions

  • Question 7/10
    4 / -1
    In an ideal choke, ratio of its inductance L to its DC resistance R is
    Solutions

  • Question 8/10
    4 / -1
    For a series L-C-R circuit at resonance, the statement which is not true, is
    Solutions

  • Question 9/10
    4 / -1
    In a choke coil, the reactance XL and resistance R are such that
  • Question 10/10
    4 / -1
    A 100 V, AC source of frequency 500 Hz is connected to an L-C-R circuit with L= 8.1 mH C =12.5µF, R =10Ω all connected in series as shown in figure. What is the quality factor of circuit?
    Solutions

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