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Questions and Answers
What is the characteristic of an ideal inductor?
What is the characteristic of an ideal inductor?
- It contains neither inductance nor resistance
- It contains only resistance and no inductance
- It contains both resistance and inductance
- It contains only inductance and no resistance (correct)
How is the instantaneous power graph of an ideal inductor obtained?
How is the instantaneous power graph of an ideal inductor obtained?
- By subtracting the instantaneous voltage from the current
- By dividing the instantaneous voltage by the current
- By adding the instantaneous voltage and current
- By multiplying the instantaneous voltage and current (correct)
What is the frequency of the instantaneous power curve compared to the current and voltage waveforms?
What is the frequency of the instantaneous power curve compared to the current and voltage waveforms?
- The same frequency
- Four times the frequency
- Twice the frequency (correct)
- Half the frequency
What is the average value of the instantaneous power curve over one complete cycle of the input voltage?
What is the average value of the instantaneous power curve over one complete cycle of the input voltage?
What happens when a negative instantaneous voltage is multiplied by a positive instantaneous current?
What happens when a negative instantaneous voltage is multiplied by a positive instantaneous current?
What can be said about the positive and negative power areas under the instantaneous power curve?
What can be said about the positive and negative power areas under the instantaneous power curve?
What does the positive portion of the power curve represent?
What does the positive portion of the power curve represent?
What happens to the energy stored in the inductor when its magnetic field collapses?
What happens to the energy stored in the inductor when its magnetic field collapses?
What is the average true power in a purely inductive circuit?
What is the average true power in a purely inductive circuit?
What is the power initially used by the inductor referred to as?
What is the power initially used by the inductor referred to as?
Why must the source be capable of delivering power for a quarter cycle?
Why must the source be capable of delivering power for a quarter cycle?
What would happen to an ideal inductor if it were connected to a circuit?
What would happen to an ideal inductor if it were connected to a circuit?
What is the direction of the induced voltage across the inductor when the switch is closed?
What is the direction of the induced voltage across the inductor when the switch is closed?
What happens to the current flowing in the circuit after five time constants?
What happens to the current flowing in the circuit after five time constants?
What is the role of the inductor when the switch is changed to position B-C?
What is the role of the inductor when the switch is changed to position B-C?
What happens to the energy stored in the inductor after five time constants?
What happens to the energy stored in the inductor after five time constants?
What is the direction of the current flowing through the resistor when the switch is changed to position B-C?
What is the direction of the current flowing through the resistor when the switch is changed to position B-C?
What is the state of the inductor after five time constants when the switch is changed to position B-C?
What is the state of the inductor after five time constants when the switch is changed to position B-C?
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