Advertisements
Advertisements
प्रश्न
In a series LCR circuit at resonance, the applied emf and current are - ______
पर्याय
Out of phase
Differ in phase by π/4 radian.
Differ in phase by π/2 radian.
In phase
Advertisements
उत्तर
In a series LCR circuit at resonance, the applied emf and current are - In phase.
APPEARS IN
संबंधित प्रश्न
A parallel LC resonant circuit is used as ______
In the LCR series circuit, what is the condition for current resonance?
State any one characteristic of a parallel LC AC resonance circuit.
State any two characteristics of a series LCR AC resonance circuit.
A parallel plate air condenser of capacity 10 µF is charged to a potential of 1000 V. The energy of the condenser is ______
Out of the following graphs, which graph shows the correct relation (graphical representation) for LC parallel resonant circuit?
In series resonance, LCR circuit, below the resonant frequency, the circuit is ____________.
If the potential difference across the inductor (9 mH) is same as that across the condenser (10 µF) in a series R-L-C circuit, then the frequency of the applied e.m.f. is nearly ____________.
In the given electrical circuit, which one of the following equations is a correct equation?
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 ____________.
In rejector circuit, above resonant frequency the circuit is ____________.
A coil of 16 mH and a capacitor of 10 µF are in series with an A.C source along with 5 `Omega` resistances. If inductive reactance is equal to capacitive reactance, then the angular frequency (in rad/s) of source is ____________.
The resonant frequency of a series LCR circuit is 'f'. The circuit is now connected to the sinusoidally alternating e.m.f of frequency '2f'. The new reactance X'L and X'C are related as ____________.
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'?
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?
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 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
