2πf_r multiplied by the resistance RResistance R divided by 2πf_r times inductance L2πf_r times inductance L divided by resistance RSquare of resistance R divided by 2πf_r times inductance L

8.What is the expression for the impedance of a circuit at parallel resonance?

Capacitance divided by the product of inductance and resistanceResistance divided by the product of inductance and capacitanceProduct of capacitance and resistance divided by inductanceInductance divided by the product of capacitance and resistanceNone of the above

9.What happens to the resonant frequency of an LC circuit when the inductance (L) or capacitance (C) is increased?

Stays unchangedGoes upDropsNot enough informationNone of the above

10.What happens to the bandwidth of an LC circuit when its quality factor (Q) increases?

WidensNarrowsStays unchangedCannot be determinedNone of the above

11.In a parallel LC circuit, what happens to the inductive reactance (XL) and capacitive reactance (XC) when the input frequency rises above the resonant frequency?

Inductive reactance increases while capacitive reactance decreasesInductive reactance decreases while capacitive reactance increasesBoth inductive and capacitive reactances increaseBoth inductive and capacitive reactances decreaseInductive and capacitive reactances remain unchanged

Transistor Tuned Amplifiers MCQs

About this subject

1.What is the value of the total reactive current in a series circuit at resonance?

2.What is the power factor of a circuit at the point of series or parallel resonance?

3.What type of load does a circuit exhibit at the point of series or parallel resonance?

4.What happens to the quality factor (Q) of a tuned circuit when its resistance is raised?

5.What is the phase difference between the input voltage and the current in a series circuit at resonance?

6.What is the dimensional representation of the quantity L divided by CR?

7.How is the quality factor (Q) of an LC circuit calculated?

8.What is the expression for the impedance of a circuit at parallel resonance?

9.What happens to the resonant frequency of an LC circuit when the inductance (L) or capacitance (C) is increased?

10.What happens to the bandwidth of an LC circuit when its quality factor (Q) increases?

11.In a parallel LC circuit, what happens to the inductive reactance (XL) and capacitive reactance (XC) when the input frequency rises above the resonant frequency?

12.What is the value of the overall reactive current in a circuit at parallel resonance?

13.Which components are present in a resonant circuit?

14.What happens to the line current during parallel resonance?

15.What type of load is employed in a tuned amplifier?

16.During series resonance, how does the voltage across the inductor compare to the voltage across the capacitor?

17.In which type of applications is a tuned amplifier primarily utilized?

18.At the resonant frequency, what happens to the voltage gain of a tuned amplifier?

19.What type of impedance does a series circuit exhibit at resonance?

20.In which mode is a tuned amplifier typically operated?

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