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Subelement A
Principles
Section 4
Resistance, Capacitance & Inductance
What formula would calculate the total inductance of inductors in series?
  • LT = L1 / L2
  • Correct Answer
    LT = L1 + L2
  • LT = 1 / L1 + L2
  • LT = 1 / L1 x L2
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Good conductors with minimum resistance have what type of electrons?
  • Few free electrons.
  • No electrons.
  • Some free electrons.
  • Correct Answer
    Many free electrons.
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Which of the 4 groups of metals listed below are the best low-resistance conductors?
  • Correct Answer
    Gold, silver, and copper.
  • Stainless steel, bronze, and lead.
  • Iron, lead, and nickel.
  • Bronze, zinc, and manganese.
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What is the purpose of a bypass capacitor?
  • It increases the resonant frequency of the circuit.
  • It removes direct current from the circuit by shunting DC to ground.
  • Correct Answer
    It removes alternating current by providing a low impedance path to ground.
  • It forms part of an impedance transforming circuit.
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How would you calculate the total capacitance of three capacitors in parallel?
  • CT = C1 + C2 / C1 - C2 + C3.
  • Correct Answer
    CT = C1 + C2 + C3.
  • CT = C1 + C2 / C1 x C2 + C3.
  • CT = 1 / C1+1 / C2 + 1 / C3.
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How might you reduce the inductance of an antenna coil?
  • Add additional turns.
  • Add more core permeability.
  • Correct Answer
    Reduce the number of turns.
  • Compress the coil turns.
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