Inductor Power Curves

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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?

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?

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?

Zero Signup and view all the answers

What happens when a negative instantaneous voltage is multiplied by a positive instantaneous current?

The resulting instantaneous power is negative Signup and view all the answers

What can be said about the positive and negative power areas under the instantaneous power curve?

The positive and negative power areas are equal Signup and view all the answers

What does the positive portion of the power curve represent?

Energy delivered from the source to the inductor Signup and view all the answers

What happens to the energy stored in the inductor when its magnetic field collapses?

It is returned to the source Signup and view all the answers

What is the average true power in a purely inductive circuit?

Zero Signup and view all the answers

What is the power initially used by the inductor referred to as?

Reactive power Signup and view all the answers

Why must the source be capable of delivering power for a quarter cycle?

To deliver power for the positive half cycle Signup and view all the answers

What would happen to an ideal inductor if it were connected to a circuit?

It would never become warm as there is no true power dissipated Signup and view all the answers

What is the direction of the induced voltage across the inductor when the switch is closed?

Opposite to the applied voltage Signup and view all the answers

What happens to the current flowing in the circuit after five time constants?

It reaches a maximum Signup and view all the answers

What is the role of the inductor when the switch is changed to position B-C?

It acts as a power source Signup and view all the answers

What happens to the energy stored in the inductor after five time constants?

It is fully dissipated as heat Signup and view all the answers

What is the direction of the current flowing through the resistor when the switch is changed to position B-C?

The same as the normal circuit current Signup and view all the answers

What is the state of the inductor after five time constants when the switch is changed to position B-C?

It has no energy remaining Signup and view all the answers

Inductor Power Curves

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