. In an "ideal" resonant circuit, what is the relationship between impedance and current?

. In an "ideal" resonant circuit, what is the relationship  between impedance and current?
by

1 Answer

Answer :

Impedance low Current high.
by

Related questions

In a parallel-resonant circuit, what is the relationship between impedance and current?

Description : In a parallel-resonant circuit, what is the relationship between impedance and current?

Last Answer : Maximum impedance, minimum current.

What is the impedance of a crystal at its resonant frequency when it is used in the series mode?

Description : What is the impedance of a crystal at its resonant frequency when it is used in the series mode?

Last Answer : Minimum.

What is the impedance of a crystal at its resonant frequency when it is used in the parallel mode?

Description : What is the impedance of a crystal at its resonant frequency when it is used in the parallel mode?

Last Answer : Maximum

What is the band of frequencies called that is included between the two points at which current falls to 70 percent of its maximum value in a resonant circuit?

Description : What is the band of frequencies called that is included between the two points at which current falls to 70 percent of its maximum value in a resonant circuit?

Last Answer : Bandwidth of the circuit

In a series resonant circuit, the impedance of the circuit is?

Description : In a series resonant circuit, the impedance of the circuit is?

Last Answer : In a series resonant circuit, the impedance of the circuit is minimum.

What impedance relationship between the output of one circuit and the input of another circuit will provide the maximum power transfer?

Description : What impedance relationship between the output of one circuit and the input of another circuit will provide the maximum power transfer?

Last Answer : Equal impedance.

What equipment uses a calibrated resonant circuit to measure frequency?

Description : What equipment uses a calibrated resonant circuit to measure frequency?

Last Answer : Wavemeter.

In a series-RLC circuit, what is the condition of the circuit if there is high impedance, low current, and low reactance voltages

Description : In a series-RLC circuit, what is the condition of the circuit if there is high impedance, low current, and low reactance voltages

Last Answer : Nonresonant (circuit is either above or below resonance)

. A non-resonant line is a line that has no standing waves of current and voltage on it and is considered to be flat. Why is this true?

Description : . A non-resonant line is a line that has no standing waves of current and voltage on it and is considered to be flat. Why is this true?

Last Answer : The load impedance of such a line is equal to Z0.

Transmission lines when connected to antenna have A. capacitive load B. resistive load whose resistance is less than characteristics impedance C. resistive load at the resonant frequency D. resistive load whose resistance is greater than the characteristic impedance of the line

Description : Transmission lines when connected to antenna have A. capacitive load B. resistive load whose resistance is less than characteristics impedance C. resistive load at the resonant frequency D. resistive load whose resistance is greater than the characteristic impedance of the line

Last Answer : C. resistive load at the resonant frequency

If the output impedance of an amplifier circuit is decreased, what is the effect on the gain?

Description : If the output impedance of an amplifier circuit is decreased, what is the effect on the gain?

Last Answer : The gain decreases.

What is the difference between calculating impedance in a series ac circuit and in a parallel ac circuit?

Description : What is the difference between calculating impedance in a series ac circuit and in a parallel ac circuit?

Last Answer : In a series circuit impedance is calculated from the values of resistance and reactance. In a parallel circuit, the values of resistive current and reactive current must be used to calculate total impedance.

What type of impedance does the tank circuit have above resonance?

Description : What type of impedance does the tank circuit have above resonance?

Last Answer : Inductive.

The input impedance of your test equipment should exceed the impedance of the circuit under test by what ratio?

Description : The input impedance of your test equipment should exceed the impedance of the circuit under test by what ratio?

Last Answer : 10 to 1

In series RLC circuit at resonant a) Voltage is in phase with current b) Current is maximum c) Inductive reactance = Capacitive reactance d) All of the above

Description : In series RLC circuit at resonant a) Voltage is in phase with current b) Current is maximum c) Inductive reactance = Capacitive reactance d) All of the above

Last Answer : Ans: All of the above

An a.c series circuit has resistance of 10ohm, inductance of 0.1H and capacitance of 10µf, voltage applied to circuit is 200V. find (i) Resonant frequency (ii) Current at resonance (iii) Power at resonance

Description : An a.c series circuit has resistance of 10ohm, inductance of 0.1H and capacitance of 10µf, voltage applied to circuit is 200V. find (i) Resonant frequency (ii) Current at resonance (iii) Power at resonance 

Last Answer : Solution: For RLC series circuit

In a series RLC circuit operating below the resonant frequency the current

Description : In a series RLC circuit operating below the resonant frequency the current  (a) I leads Vs (b) I lags Vs (c) I is in Phase with Vs (d) None of these

Last Answer : In a series RLC circuit operating below the resonant frequency the current  I leads Vs 

In a series RLC circuit that is operating above the resonant frequency, the current : -

Description : In a series RLC circuit that is operating above the resonant frequency, the current : -  a) lags the applied voltage b) leads the applied voltage c) is in phase with the applied voltage d) is zero

Last Answer : In a series RLC circuit that is operating above the resonant frequency, the current : - lags the applied voltage

The resonant frequency of electron wobble can be changed by variation of what force?

Description : The resonant frequency of electron wobble can be changed by variation of what force?

Last Answer : The applied magnetic field.

Inductive tuning of a resonant cavity is accomplished by placing a nonmagnetic slug in what area?

Description : Inductive tuning of a resonant cavity is accomplished by placing a nonmagnetic slug in what area?

Last Answer : The area of maximum H lines.

What two variables determine the primary frequency of a resonant cavity?

Description : What two variables determine the primary frequency of a resonant cavity?

Last Answer : Size and shape of the cavity.

How will an iris that has portions along both the "a" and "b" dimension walls act at the resonant frequency?

Description : How will an iris that has portions along both the "a" and "b" dimension walls act at the resonant frequency?

Last Answer : As a shunt resistance.

If the inductor and capacitor values are increased, what happens to the resonant frequency?

Description : If the inductor and capacitor values are increased, what happens to the resonant frequency?

Last Answer : Decreases.

Without strapping, the resonant cavities of a hole-and-slot anode are connected in what manner?

Description : Without strapping, the resonant cavities of a hole-and-slot anode are connected in what manner?

Last Answer : Series.

A cylindrical copper block with resonant cavities around the circumference is used as what component of a magnetron?

Description : A cylindrical copper block with resonant cavities around the circumference is used as what component of a magnetron?

Last Answer : Anode or plate

What is the relationship of current to voltage in a circuit?

Description : What is the relationship of current to voltage in a circuit?

Last Answer : current increases as voltage increases.

There is a relationship between total current and current through the individual components in a circuit. What is this relationship in a series circuit and a parallel circuit?

Description : There is a relationship between total current and current through the individual components in a circuit. What is this relationship in a series circuit and a parallel circuit?

Last Answer : The source voltage would have to be increased to 640 volts

The ideal radar spectrum has what relationship to the carrier frequency?

Description : The ideal radar spectrum has what relationship to the carrier frequency?

Last Answer : Symmetrical above and below the carrier frequency.

What is a Resonant Circuit ?

Description : What is a Resonant Circuit ?

Last Answer : When the inductive reactance and capacitance are equal in an AC series circuit , then that circuit is called resonant circuit.

When a capacitor is connected in series with a Marconi antenna? A. Antenna open circuit stops transmission B. An inductor of equal value must be added C. No change occurs to antenna D. Antenna resonant frequency increases

Description : When a capacitor is connected in series with a Marconi antenna? A. Antenna open circuit stops transmission B. An inductor of equal value must be added C. No change occurs to antenna D. Antenna resonant frequency increases

Last Answer : D. Antenna resonant frequency increases

Determine the lower half-power frequency of a class-C amplifier having upper half-power frequency of 10.025 MHz, a resonant frequency 5 MHz and a circuit Q of 10. A. 1.0025 MHz B. 10.525 MHz C. 0.5 MHz D. 10 MHz

Description : Determine the lower half-power frequency of a class-C amplifier having upper half-power frequency of 10.025 MHz, a resonant frequency 5 MHz and a circuit Q of 10. A. 1.0025 MHz B. 10.525 MHz C. 0.5 MHz D. 10 MHz

Last Answer : A. 1.0025 MHz

Derive an expression for resonant frequency of series RLC circuit.

Description : Derive an expression for resonant frequency of series RLC circuit.

Last Answer : At resonance frequency in RLC series circuit, we have inductive reactance is equal to capacitive reactance i.e.  Where fr is the resonant frequency in RLC series circuit. 

For a series resonant circuit, at the half power points,which of the following is true?

Description : For a series resonant circuit, at the half power points,which of the following is true?  (a) Current is half of the current at resonance. (b) Resistance is equal to the reactance. (c) The impedance is half the impedance at the resonance. (d) None of the above

Last Answer : For a series resonant circuit, at the half power points,which of the following is true?  (a) Current is half of the current at resonance. (b) Resistance is equal to the reactance. (c) The impedance is half the impedance at the resonance. (d) None of the above

A tuned circuit has a Q of 100 at its resonant frequency of 500 kHz. Its bandwidth is _____kHz.

Description : A tuned circuit has a Q of 100 at its resonant frequency of 500 kHz. Its bandwidth is _____kHz. (A) 50000 (B) 0.2 (C) 600 (D) 5

Last Answer : A tuned circuit has a Q of 100 at its resonant frequency of 500 kHz. Its bandwidth is 5 kHz.

A series R-L-C Circuit has a resonant frequency of 1000 Hz. If the values of R, L and C are

Description : A series R-L-C Circuit has a resonant frequency of 1000 Hz. If the values of R, L and C are doubled, the new resonant frequency is

Last Answer : A series R-L-C Circuit has a resonant frequency of 1000 Hz. If the values of R, L and C are doubled, the new resonant frequency is 500 Hz

Consider the following statements : If a high Q parallel resonant circuit is loaded with a resistance ...

Description : Consider the following statements : If a high Q parallel resonant circuit is loaded with a resistance  1. The circuit impedance reduces.  2. The resonant frequency remains the same.  3. The bandwidth reduces.  Which of the above statements is/are correct ?

Last Answer : 1

In a series resonant circuit, maximum voltage across L occurs at

Description : In a series resonant circuit, maximum voltage across L occurs at  (a) Resonant frequency (b) Slightly below resonant frequency (c) Slightly above resonant frequency (d) At a frequency where I is maximum

Last Answer : In a series resonant circuit, maximum voltage across L occurs at Slightly above resonant frequency

The Q factor of a coil at resonant frequency 1.5 MHz of an RLC series circuit is 150. The Bandwidth is : -

Description : The Q factor of a coil at resonant frequency 1.5 MHz of an RLC series circuit is 150. The Bandwidth is : - a) 225 MHz b) 1.06 MHz c) 10 KHz d) 10 MHz

Last Answer : The Q factor of a coil at resonant frequency 1.5 MHz of an RLC series circuit is 150. The Bandwidth is : - 10 KHz

A series RLC circuit has a resonant frequency of 1 KHz and a quality factor Q = 100. If each of the R,L and C...

Description : A series RLC circuit has a resonant frequency of 1 KHz and a quality factor Q = 100. If each of the R,L and C is doubled from its original value, the new Q of the circuit is:  (1) 25 (2) 50 (3) 100 (4) 200

Last Answer : A series RLC circuit has a resonant frequency of 1 KHz and a quality factor Q = 100. If each of the R,L and C is doubled from its original value, the new Q of the circuit is: 200.

In a series L-C circuit at the resonant frequency the?

Description : In a series L-C circuit at the resonant frequency the?

Last Answer : In a series L-C circuit at the resonant frequency the current is maximum.

In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of?

Description : In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of?

Last Answer : In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of L or C.

In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value?

Description : In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value?  

Last Answer : In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value will increase the selectivity of the circuit.

Decreasing the frequency in a capacitive circuit while maintaining a constant circuit voltage, will result in a/an _____________. A. increase in apparent power B. decrease in circuit current C. decrease in capacitive reactance D. decrease in total impedance

Description : Decreasing the frequency in a capacitive circuit while maintaining a constant circuit voltage, will result in a/an _____________. A. increase in apparent power B. decrease in circuit current C. decrease in capacitive reactance D. decrease in total impedance

Last Answer : Answer: B

Which of the electrical properties listed will always be the same for each component in a parallel circuit? A. Impedance B. Current C. Resistance D. Voltage

Description : Which of the electrical properties listed will always be the same for each component in a parallel circuit? A. Impedance B. Current C. Resistance D. Voltage

Last Answer : Answer: D

When troubleshooting electronic equipment, you should use a high impedance multimeter ________________. A. to prevent excess current flow through the meter that would damage it B. for AC measurements only and a low resistance meter for DC measurements C. whenever a low impedance meter is not available, regardless of the components being tested D. so as not to load down the circuit and obtain erroneous voltage readings

Description : When troubleshooting electronic equipment, you should use a high impedance multimeter ________________. A. to prevent excess current flow through the meter that would damage it B. for AC measurements only ... being tested D. so as not to load down the circuit and obtain erroneous voltage readings

Last Answer : Answer: D

A final amplifier of a radio transmitter draws 250 mA of plate current when the plate supply voltage is 1400 volts. If the plate circuit efficiency is 80% and the transmitter is connected to an antenna having a feed impedance of 70 ohms, what is the antenna current at the feed-point? A. 4.0 A B. 2.2 A C. 1.25 A D. 2.0 A

Description : A final amplifier of a radio transmitter draws 250 mA of plate current when the plate supply voltage is 1400 volts. If the plate circuit efficiency is 80% and the transmitter is connected to an antenna having a feed impedance of 70 ohms, ... at the feed-point? A. 4.0 A B. 2.2 A C. 1.25 A D. 2.0 A

Last Answer : D. 2.0 A

Impedance of ideal op-amp is A. zero B. 1 C. infinite D. 2

Description : Impedance of ideal op-amp is A. zero B. 1 C. infinite D. 2

Last Answer :  infinite

What device is used to produce a gradual change in impedance at the end of a waveguide?

Description : What device is used to produce a gradual change in impedance at the end of a waveguide?

Last Answer : Horn.

What is the result of an impedance mismatch in a waveguide?

Description : What is the result of an impedance mismatch in a waveguide?

Last Answer : Standing waves that cause power losses, a reduction in power handling capability, and an increase in frequency and sensitivity.