Electrical Engineering MCQs

Page No. 116

The dimensions of L/CR are that of _______________?


aFarad


bHenry


cOhm


dNone of the above


View Answer Ohm

The Q of an LC circuit is given by _________________?


a2pfr x R


bR / 2pfrL


c 2pfrL / R


dR2/2pfrL


View Answer 2pfrL / R

In parallel resonance, the circuit impedance is_________________?


aC/LR


bR/LC


c CR/L


dL/CR


View Answer L/CR

When either L or C is increased, the resonant frequency of LC circuit ____________?


a Remains the same


b Increases


cDecreases


dInsufficient data


View Answer Decreases

If Q of an LC circuit increases, then bandwidth ______________?


a Increases


bDecreases


cRemains the same


d Insufficient data


View Answer Decreases

In a parallel LC circuit, if the input signal frequency is increased above resonant frequency then _______________?


aXL increases and XC decreases


bXL decreases and XC increases


c Both XL and XC increase


dBoth XL and XC decrease



At parallel resonance, the net reactive component circuit current is _______________?


aCapacitive


bZero


cInductive


dNone of the above


View Answer Zero

A resonant circuit contains ____________elements?


aR and L only


bR and C only


cOnly R


dL and C


View Answer L and C

At parallel resonance, the line current is_______________?


aMinimum


bMaximum


c Quite large


dNone of the above


View Answer Minimum

A tuned amplifier uses__________load?


aResistive


bCapacitive


cLC tank


dInductive


View Answer LC tank

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