Electronic Principles
For a pure capacitor:

ac current lags the voltage by 90 degree
ac current is converted to dc voltage
ac current and voltage are exactly in phase
ac current leads the voltage by 90 degree
None 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 principles best describes the basic operation of a generator?

Current flowing through a conductor generates a magnetic field
Like magnetic poles attract; unlike poles repel
Like magnetic poles repel; unlike poles attract
Current is induced in a conductor that is moving through a magnetic field
None of these

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