Electronic Principles
Which one of the following statements most accurately applies to the frequency of a waveform?

The higher the amplitude of a waveform, the higher its frequency
The longer the period of a waveform, the lower its frequency
Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz
None of these
The actual frequency of a sine waveform is 1.41 times the working frequency

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Electronic Principles
Voltage is

None of these
The smallest electrically charged particle
The number of free electrons in an atom
The flow of charged particles through a material
Trie force that causes electrons to flow

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Electronic Principles
Which one of the following phrases most accurately describes a purely capacitive circuit?

Resistances provide the only opposition to current flow
Combinations of resistance and capacitive reactance provide any opposition to current flow
The ac voltage leads the current by 90 degree
Capacitive reactance provides the only opposition to current flow
None of these

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Electronic Principles
One henry of inductance is defined as:

None of these
the number of turns of wire in an inductor multiplied by the amount of current flowing through it
the amount of counter emf required to reduce a current to 1 A
the amount of inductance required to change the frequency of a current by 1 Hz
the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second

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