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

1 Answer

Answer :

Minimum.

Related questions

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

Last Answer : Maximum

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

Last Answer : Maximum impedance, minimum current.

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

Last Answer : Impedance low Current high.

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.

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

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

Last Answer : The applied magnetic field.

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

Last Answer : Size and shape of the cavity.

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.

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

Last Answer : Decreases.

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

Last Answer : Wavemeter.

Description : What is the effect of adding a capacitor in series with an antenna? A. The antenna’s resonant frequency will increase B. The antenna’s resonant frequency will decrease C. The antenna will be physically 5% longer than its electrical length D. A capacitor is never added in series with an antenna

Last Answer : A. The antenna’s resonant frequency will increase

Description : Increasing the resonant frequency of an end-fed Marconi antenna can be done by A. adding a capacitor in series and reducing the physical length B. adding an inductor in series C. adding an inductor in series D. All of these

Last Answer : A. adding a capacitor in series and reducing the physical length

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

Description : How is it possible to lower the resonant frequency of Hertz dipole antenna? A. By reducing the frequency at the transmitter B. By connecting a capacitor in series with the antenna C. By the connecting a resistor in series with the antenna D. By connecting an inductor in series with the antenna

Last Answer : D. By connecting an inductor in series with the antenna

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

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. 

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 

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

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

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

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.

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.

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.

Description : A series mode crystal is marked 10.000 MHz., It is used in a circuit that operates the crystal in its parallel mode. The circuit can be expected to A) Run below 10 MHz B) Run at 10 MHz C) Run above 10 MHz D) Not oscillate.

Last Answer : C) Run above 10 MHz

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)

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.

Description : What happens to the impedance of interelectrode capacitance as frequency increases?

Last Answer : Impedance decreases.

Description : In swept-frequency testing the impedance of a transmission line, what electrical characteristic is actually being measured?

Last Answer : Swr on the transmission line.

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

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.

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.

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

Last Answer : Series.

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

Last Answer : Anode or plate

Description : Compare series and parallel resonance on the basis of (i) Resonating frequency (ii) Impedance (iii) Current (iv) Magnification

Last Answer : S. No . Parameter Series Circuit Parallel Circuit 1 Resonating frequency 2 Impedance Minimum, Z = R Maximum, Z = L/CR 3 Current Maximum, I ... , I = V/(L/CR)  4 Magnification Voltage magnification takes place Current magnification takes place

Description : Give two reasons why the value of the normalized frequency (V) is varied in single mode stepindex fibers?

Last Answer : To increase performance and reduce losses caused by bending and splicing.

Description : In single mode operation, the value of the normalized frequency (V) should remain near the 2.405 level. If the value of V is less than 1, do single mode fibers carry a majority of the power in the core or cladding material?

Last Answer : Cladding material.

Description : What limits the tuning range around the center frequency of a reflex klystron in a particular mode of operation?

Last Answer : The half-power points of the mode.

Description : The value of the normalized frequency parameter (V) relates the core size with mode propagation. When single mode fibers propagate only the fundamental mode, what is the value of V?

Last Answer : V≤2.405.

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.

Description : The effect of adding parasitic elements of a Hertz dipole is to A. make the antenna more omnidirectional B. reduce its resonant frequency C. increase the antenna’s power gain D. All of these

Last Answer : C. increase the antenna’s power gain

Description : If the length of an antenna is changed from 2.5 meters to 2.8 meters, its resonant frequency will A. increase B. depend on the velocity factor so the resonant frequency can either be increased or decreased C. will be unchanged D. decrease

Last Answer : D. decrease

Description : If the length of a Hertz dipole is decreased A. its resonant frequency will be lowered its distributed inductance will be increased B. its distributed inductance will be decreased C. its ... frequency will be increased D. its distributed capacitance between the antenna and ground will be increased.

Last Answer : C. its resonant frequency will be increased

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.

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

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

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

Description : A resonant system has a fundamental frequency of 100 Hz. If the next higher frequency that gives a resonance are 300 Hz and 500 Hz, the system could be (a) A pip open at both ends (b) A pipe ... (c) A string vibrating between two fixed points (d) A pipe open at one end and closed at the other

Last Answer : Ans:(d)

Description : What is Resonant Frequency?

Last Answer : Answer: The frequency at which resonant peak occurs is called the resonant frequency. Resonance frequency explains about the speed of the transient response.

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