Electronic Principles
What is the primary difference between primary and secondary cell batteries?

Secondary-cell batteries can be recharged and used many times, whereas primary-cell batteries cannot be properly recharged
Primary-cell batteries use chemical cells, whereas secondary-cell batteries use an alternative energy source, such as thermal or magnetic energy, to supplement their outputs
Primary-cell batteries must be recharged at a much slower rate that secondary-cell batteries
None of these
Primary-cell batteries can be recharged and used many times, whereas secondary-cell batteries cannot be properly recharged

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Electronic Principles
Which one of the following statements is true for the impedance of a series RC circuit?

None of these
The impedance is greater than either the resistance or capacitive reactance but less than their sum
The impedance is equal to the sum of the resistance and capacitive reactance
The impedance is greater than the sum of the resistance and capacitive reactance
The impedance is less than the sum of the resistance and capacitive reactance

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Electronic Principles
The total inductance of a series inductor circuit is:

None of these
less than the value of the smallest inductor
equal to the sum of the individual inductance values
equal to the sum of the individual inductive-reactance values
equal to the source voltage divided by total current

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Electronic Principles
Which one of the following statements best describes magnetic hysteresis?

Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet
Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently
None of these
Hysteresis is most apparent when the core material is saturated
Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet

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