हिंदी

In the LCR series circuit, what are the (a) impedance and (b) reactance at current resonance?

Advertisements
Advertisements

प्रश्न

In the LCR series circuit, what are the (a) impedance and (b) reactance at current resonance? 

टिप्पणी लिखिए
Advertisements

उत्तर

At resonance,

  1. the impedance is minimum, i.e, Z = R
  2. net reactance is zero as |XL - XC| = 0.  
shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 13: AC Circuits - Short Answer I

संबंधित प्रश्न

A series LCR resonant circuit is used as ______


A parallel LC resonant circuit is used as ______ 


State any two characteristics of a series LCR AC resonance circuit.


Obtain the expression for the resonant frequency of the LCR series circuit and explain electrical resonance in an LCR series circuit.


In an LCR circuit, at resonance ______


In series resonance, LCR circuit, below the resonant frequency, the circuit is ____________.


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 ____________.


A parallel combination of pure inductor and capacitor is connected across a source of alternating e.m.f. 'e'. The currents flowing through an inductor and capacitor are iL and iC respectively. In this parallel resonant circuit, the condition for currents i, iL and iC is (i = net r.m.s. current in the circuit)


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 ______.


In LC parallel resonance circuit, choose the correct statement.


An electric lamp connected in series with a capacitor and an AC source glows with a certain brightness. (a) How does the average power change on increasing the capacitance? (b) How does the brightness of the lamp change on increasing the capacitance?


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.


What is a rejector circuit?


What are the Uses of 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 ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×