Electronic Principles
Which one of the following kinds of materials has the highest permeability?

A ferromagnetic material
A diamagnetic material
None of these
A paramagnetic material
All of these

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Electronic Principles
Which one of the following statements is true for the voltages in a series RL circuit?

The voltage always has the same amplitude and phase for every part of the circuit
The total voltage lags the total current by less than 90
None of these
The total voltages is equal to the sum of the voltages across the resistance and inductance
The total voltage is less than the sum of the voltages across the resistance and inductance

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Electronic Principles
Which one of the following statements best applies to a parallel RLC circuit?

The voltage waveform for each component always has the same amplitude and phase as the applied voltage
The current waveform for each component always has the same amplitude and phase as the applied current
None of these
The sum of the current is always less than the applied current
All of these

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Electronic Principles
When a series RLC circuit is operating at its resonant frequency:

the difference between inductive and capacitive reactance is equal to the resistance
capacitive reactance is greater than the inductive reactance
inductive reactance is greater than the capacitive reactance
inductive reactance is equal to the capacitive reactance
None of these

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