LCR Series Circuit and Resonance
LCR Series Circuit and Resonance: Overview
This topic discusses the circuits containing inductance, capacitance and resistance in series (L-C-R series circuit). Further, it explains the impedance triangle and phasor diagram.
Important Questions on LCR Series Circuit and Resonance
Draw a current versus frequency graph for parallel resonant circuit.
The current is minimum in _____ LCR circuit?
The current is minimum in parallel LCR circuit?
Why the current is minimum in parallel LCR circuit?
In the parallel RLC circuit, the inductance current vector _____ the voltage vector by .
In the parallel RLC circuit, the inductance current vector lags the voltage vector by .
The LC parallel resonant circuit
What is a parallel resonant circuit? Draw its phasor diagram.
Draw phasor diagram for parallel resonant circuit.
What is the value of current in RLC parallel circuit at resonance frequency
In series RLC circuit, at resonance condition impedance is purely resistive, and it is equal to _____.
The resonant frequency of the series LCR circuit is expressed as. fr = 1/2π√(LC)
What is meant by resonance in an LCR circuit?
Metal detector works on the principle of
Metal detector works on the principle of _____ induction.
At the airport, a person is made for walking through a doorway of a metal detector for security reasons. If he is carrying anything made of metal, the metal detector emits a sound.
How Do Metal Detectors Work?
Half power point frequencies for which the power in the circuit is half of the ___________________ power in the circuit.
The half power point is commonly used definition for the _____ frequency.
The relationship between power and frequency is inversely proportional to each other.
