Electronic Principles
The knee voltage of a diode is approximately equal to the

Forward voltage
Applied voltage
None of these
Barrier potential
Breakdown voltage

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

Combinations of resistance and inductive reactance provide any opposition to current flow
Resistances provide the only opposition to current flow
Inductive reactance provides the only opposition to current flow
The ac voltage lags the current by 90 degree
None of these

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

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

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