Inductors Questions

• Maximum power will transfer across a transformer when the primary impedance equals the secondary impedance.
• Inductance is proportional to the cross-sectional area of a coil.
• In a dc circuit, the only conversion of energy to heat is in the inductance of the coil itself.
• An RL filter could be a high-pass or a low-pass filter.
• The primary and secondary are in phase.
• The secondary current in a transformer depends on the secondary voltage and load resistance values.
• The time constant of an inductive circuit is dependent on the circuit's resistance.
• Inductors are not as versatile as capacitors.
• The output of the secondary winding is 15 V.
• Faraday's law states that the polarity of induced voltage in a coil is in opposition to the current change through that coil.
• An ac generator will produce a constant waveform.
• A magnetic field results whenever a current flows through a conductor.
• Increasing the inductance value in an ac inductive circuit will lower the circuit current.
• A magnet consisting of a coil of wire wound around a soft iron or steel core is called an electromagnet.
• An ideal inductor would not dissipate any energy.
• All the schematic symbols shown in the given figure are variable inductors.
• A step-up transformer will have a turns ratio greater than 1.
• The quality factor of an inductor is the ratio of inductive reactance to the winding resistance of the coil.
• An inductor will boost current flow.
• The amount of dc current that an inductor will allow to pass depends on the circuit's total resistance that is in series with it.