A positive angle of 30° is equivalent to a negative angle of
A positive angle of 30° is equivalent to a negative angle of
In a series RC circuit, when the frequency and the resistance are halved, the impedance
In a series RC circuit, when the frequency and the resistance are halved, the impedance
The capacitor voltage always leads the current by 90°.
The capacitor voltage always leads the current by 90°.
A filter passes all frequencies.
A filter passes all frequencies.
A complex number represents a phasor quantity.
A complex number represents a phasor quantity.
A 12 kΩ resistor is in series with a 0.02 µF capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.3 ∠0° mA, what is the source voltage expressed in polar form?
A 12 kΩ resistor is in series with a 0.02 µF capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.3 ∠0° mA, what is the source voltage expressed in polar form?
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
A 120 Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?
A 120 Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?
The impedance of a series RC circuit varies directly with frequency.
The impedance of a series RC circuit varies directly with frequency.
The complex number 40 ∠ 55° is equivalent to
The complex number 40 ∠ 55° is equivalent to
A 47 Ω resistor and a capacitor with a capacitive reactance of 120 Ω are in series across an ac source. What is the circuit impedance, Z?
A 47 Ω resistor and a capacitor with a capacitive reactance of 120 Ω are in series across an ac source. What is the circuit impedance, Z?
A 12 kΩ resistor is in series with a 0.02 µF capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.3 ∠0° mA, what is the source voltage expressed in polar form?
A 12 kΩ resistor is in series with a 0.02 µF capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.3 ∠0° mA, what is the source voltage expressed in polar form?
A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
A 47 Ω resistor and a capacitor with 150 Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is
A 47 Ω resistor and a capacitor with 150 Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is
A 120 Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?
A 120 Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?
Positive numbers can be represented by points to the right of the origin on the horizontal axis of a graph.
Positive numbers can be represented by points to the right of the origin on the horizontal axis of a graph.
For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is
For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is
What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?
What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?
In the complex plane, the number 4 + j3 is located in the
In the complex plane, the number 4 + j3 is located in the
In the complex plane, the number 4 + j3 is located in the
In the complex plane, the number 4 + j3 is located in the
The polar form of a complex number consists of a real part and a j part.
The polar form of a complex number consists of a real part and a j part.
A 47 Ω resistor and a capacitor with 150 Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is
A 47 Ω resistor and a capacitor with 150 Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is
What is the angular difference between +j4 and -j4?
What is the angular difference between +j4 and -j4?
In the complex plane, the number 14 - j5 is located in the
In the complex plane, the number 14 - j5 is located in the
An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:
An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:
A positive angle of 30° is equivalent to a negative angle of
A positive angle of 30° is equivalent to a negative angle of
Point +4 on the complex plane is
Point +4 on the complex plane is
A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is
A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is
In a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is
In a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is
The circuit phase angle is the angle between the total current and the applied (source) voltage.
The circuit phase angle is the angle between the total current and the applied (source) voltage.
In a series RC circuit, when the frequency and the resistance are halved, the impedance
In a series RC circuit, when the frequency and the resistance are halved, the impedance
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle
Positive numbers can be represented by points to the right of the origin on the horizontal axis of a graph.
Positive numbers can be represented by points to the right of the origin on the horizontal axis of a graph.
The complex number 40 ∠ 55° is equivalent to
The complex number 40 ∠ 55° is equivalent to
A 2 kΩ resistor is in series with a 0.015 µF capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?
A 2 kΩ resistor is in series with a 0.015 µF capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?
The capacitor voltage always leads the current by 90°.
The capacitor voltage always leads the current by 90°.
The resistor voltage is always out of phase with the current.
The resistor voltage is always out of phase with the current.
A filter passes all frequencies.
A filter passes all frequencies.
Total current in an RC circuit always leads the source voltage.
Total current in an RC circuit always leads the source voltage.
Apparent power is expressed in watts.
Apparent power is expressed in watts.
A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 kΩ. Current flow in the circuit is
A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 kΩ. Current flow in the circuit is
A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 kΩ. Current flow in the circuit is
A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 kΩ. Current flow in the circuit is
Apparent power is expressed in watts.
Apparent power is expressed in watts.
Total current in an RC circuit always leads the source voltage.
Total current in an RC circuit always leads the source voltage.
In the complex plane, the number 14 - j5 is located in the Fourth quadrant
In the complex plane, the number 14 - j5 is located in the Fourth quadrant
An imaginary number is one that exists only in the mind of the mathematician.
An imaginary number is one that exists only in the mind of the mathematician.
An imaginary number is one that exists only in the mind of the mathematician.
An imaginary number is one that exists only in the mind of the mathematician.
What is the angular difference between +j4 and -j4?
What is the angular difference between +j4 and -j4?
Point +4 on the complex plane is
Point +4 on the complex plane is
A capacitor with 150 Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
A capacitor with 150 Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
In a lag network, the output voltage lags the input voltage in phase.
In a lag network, the output voltage lags the input voltage in phase.
The resistor voltage is always out of phase with the current.
The resistor voltage is always out of phase with the current.
In the complex plane, the number 14 - j5 is located in the Fourth quadrant
In the complex plane, the number 14 - j5 is located in the Fourth quadrant
In a lag network, the output voltage lags the input voltage in phase.
In a lag network, the output voltage lags the input voltage in phase.
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
The complex number 6 + j6 is equivalent to
The complex number 6 + j6 is equivalent to
In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is
In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is
The polar form of a complex number consists of a real part and a j part.
The polar form of a complex number consists of a real part and a j part.
A 2 kΩ resistor and a 0.002 µF capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is
A 2 kΩ resistor and a 0.002 µF capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is
A 2 kΩ resistor is in series with a 0.015 µF capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?
A 2 kΩ resistor is in series with a 0.015 µF capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?
The circuit phase angle is the angle between the total current and the applied (source) voltage.
The circuit phase angle is the angle between the total current and the applied (source) voltage.
In the complex plane, the number 14 - j5 is located in the
In the complex plane, the number 14 - j5 is located in the
In an RC circuit, the impedance is determined by both the resistance and the capacitive reactance combined.
In an RC circuit, the impedance is determined by both the resistance and the capacitive reactance combined.
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle
For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is
For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is
Complex numbers can be added and subtracted but not multiplied or divided.
Complex numbers can be added and subtracted but not multiplied or divided.
In a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is
In a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is
What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?
What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?
A capacitor with 150 Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
A capacitor with 150 Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
A 2 kΩ resistor and a 0.002 µF capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is
A 2 kΩ resistor and a 0.002 µF capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is
The complex number 6 + j6 is equivalent to
The complex number 6 + j6 is equivalent to
A complex number represents a phasor quantity.
A complex number represents a phasor quantity.
Complex numbers can be added and subtracted but not multiplied or divided.
Complex numbers can be added and subtracted but not multiplied or divided.
In an RC circuit, the impedance is determined by both the resistance and the capacitive reactance combined.
In an RC circuit, the impedance is determined by both the resistance and the capacitive reactance combined.
A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is
A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is
An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:
An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:
In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is
In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is
A 47 Ω resistor and a capacitor with a capacitive reactance of 120 Ω are in series across an ac source. What is the circuit impedance, Z?
A 47 Ω resistor and a capacitor with a capacitive reactance of 120 Ω are in series across an ac source. What is the circuit impedance, Z?
The power factor (PF) indicates how much of the apparent power is true power.
The power factor (PF) indicates how much of the apparent power is true power.
The impedance of a series RC circuit varies directly with frequency.
The impedance of a series RC circuit varies directly with frequency.
A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
The power factor (PF) indicates how much of the apparent power is true power.
The power factor (PF) indicates how much of the apparent power is true power.
