Electronic Principles
To get the Thevenin voltage, you have to

Open the load resister
Short the load resistor
Open the voltage source
None of these
Short the voltage source

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

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

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Electronic Principles
Which one of the following statements most accurately describes the nature of inductive reactance?

None of these
Inductive reactance is an opposition to current flow in dc circuits
Inductive reactance is a force that tends to overcome the effects of counter emf
Inductive reactance is another term for counter emf
Inductive reactance is an opposition to current flow in ac circuits

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