Series Resonance MCQ’s

Electronics & Communication Engineering Network Theory

This set of Network Theory Multiple Choice Questions & Answers (MCQs) focuses on “Series Resonance”.

1. In a series resonance circuit, series resonance occurs when?
a) XL = 1
b) XC = 1
c) XL = XC
d) XL = -XC

2. As XL = XC in a series resonance circuit, the impedance is_________
a) purely capacitive
b) purely inductive
c) purely resistive
d) capacitive and inductive

3. The circuit is said to be in resonance if the current is ____ with the applied voltage.
a) in phase
b) out of phase
c) 45⁰ out of phase
d) 90⁰ out of phase

4. At resonant frequency, the voltage across capacitor is _______ the voltage across inductor.
a) greater than
b) less than
c) greater than or equal to
d) equal to

5. The voltage across the LC combination in a series RLC circuit is?
a) 0
b) 1
c) 2
d) 3

6. For the circuit shown in figure determine the capacitive reactance at resonance.

network-theory-questions-answers-series-resonance-q8

a) 15
b) 20
c) 25
d) 30

7. In series RLC circuit, the voltage across capacitor and inductor are ______ with each other.
a) in phase
b) 180⁰ out of phase
c) 90⁰ out of phase
d) 45⁰ out of phase

8. The expression of resonant frequency in a series resonant circuit is?
a) 1/(2π√C)
b) 1/( 2π√L)
c) 2π√LC
d) 1/(2π√LC)

9. What is the value of the impedance at resonance in the circuit shown below?

network-theory-questions-answers-series-resonance-q8

a) 25
b) 50
c) 75
d) 100

10. Determine the resonant frequency (kHz) for the circuit shown below.

network-theory-questions-answers-series-resonance-q10

a) 2.25
b) 22.5
c) 225
d) 2250

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