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प्रश्न
A series LCR resonant circuit is used as ______
पर्याय
A potential divider circuit.
A radio wave transmitter
A source of displacement current
A tunning circuit in a television receiver set.
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उत्तर
A series LCR resonant circuit is used as a tunning circuit in a television receiver set.
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संबंधित प्रश्न
In the LCR series circuit, what is the condition for current resonance?
State any two characteristics of a series LCR AC resonance circuit.
In the LCR series circuit, what are the (a) impedance and (b) reactance at current resonance?
A coil of resistance 10 Ω and inductance 100mH and a capacitor of variable capacitance are connected across a 20V, 50Hz A.C. supply. At what capacitance will resonance occur?
Obtain the expression for the resonant frequency of the LCR series circuit and explain electrical resonance in an LCR series circuit.
Out of the following graphs, which graph shows the correct relation (graphical representation) for LC parallel resonant circuit?
An A.C. voltage of r.m.s. value 0.1 V is applied to an LCR series circuit in which L = 100 µH and C = 9 x 10-8 F and R = 2 `Omega`. The resonant frequency will be ____________.
In the given electrical circuit, which one of the following equations is a correct equation?
A transistor-oscillator using a resonant circuit with an inductor L (of negligible resistance) and a capacitor C in series produce oscillation of frequency f. If L is doubled and C is changed to 4C, the frequency will be ____________.
In parallel resonance, the current will be minimum, when ____________.
In a resonance tube, first and second resonance positions occur respectively at 28 cm and 88 cm. If the frequency of the fork is 300 Hz, then the speed of sound is ____________.
In LCR circuit, the capacitance is changed from C to 4C. For some resonant frequency, the inductance should be changed from L to ____________.
At what frequency (approximate) will the inductive reactance of 4 H inductance be equal to the capacitive reactance of 4 µF capacitance?
In rejector circuit, above resonant frequency the circuit is ____________.
An a.c. source of variable frequency 'f' is connected to an LCR series circuit. Which one of the graphs represent the variation of current 'I' in the circuit with frequency 'f'?
The LCR series and parallel resonant circuits are respectively called as ____________.
In a series resonant circuit, having L, C and R as its elements, the resonant current is i. The power dissipated in circuit at resonance is ______.
What is an acceptor circuit?
State the use of the acceptor circuit.
A coil of resistance 5 Ω and self inductance 0.2 H is connected in series with variable capacitor across a 30 V(rms), 50 Hz supply. (i) At what capacitance resonance occur? (ii) Find the corresponding current.
In LCR series circuit, the condition for current resonance is ______.
What is a rejector circuit?
A particle starting from extreme position performs S.H.M. The phase difference of the particle between any two successive mean positions is ______.
In an L-C-R series resonant circuit, the angular frequency at resonance is ‘ω’. When the inductance of inductance is made twice and capacitance of the capacitor is made four times, the angular frequency at resonance is ‘ω₁’. The ratio of ω: ω₁ is
