Resonant Circuits - Electronic Engineering (MCQ) questions & answers

1)   What will be the nature of impedance at a frequency below the antiresonant frequency?

a. Capacitive
b. Inductive
c. Reactive
d. Resistive
Answer  Explanation 

ANSWER: Inductive

Explanation:
No explanation is available for this question!
2)   If the value of resonant frequency is 50 kHz in a series RLC circuit along with the bandwidth of about 1 kHz, then what would be the value of quality factor?

a. 5
b. 50
c. 100
d. 500
Answer  Explanation 

ANSWER: 50

Explanation:
No explanation is available for this question!
3)   What would be the value of impedance of a parallel resonant circuit at antiresonance condition?

a. Resistive & maximum
b. Resistive & minimum
c. Reactive & maximum
d. Reactive & minimum
Answer  Explanation 

ANSWER: Resistive & maximum

Explanation:
No explanation is available for this question!
4)   The current leads supply voltage if a series resonant circuit exhibits its operation__________ the resonant frequency

a. Above
b. Below
c. Equal to
d. None of the above
Answer  Explanation 

ANSWER: Below

Explanation:
No explanation is available for this question!
5)   If an a.c. signal generator drives a series RLC circuit, then the circuit undergoes resonance only due to variation in __________

a. Supply voltage
b. Series resistance
c. Supply frequency
d. Phase angle
Answer  Explanation 

ANSWER: Supply frequency

Explanation:
No explanation is available for this question!
6)   How do the series resonant circuit behave under the resonance condition?

a. Current amplifier
b. Transconductance
c. Voltage regulator
d. Voltage amplifier
Answer  Explanation 

ANSWER: Voltage amplifier

Explanation:
No explanation is available for this question!
7)   Reactance curve is basically a graph of individual reactances verses __________

a. Frequency
b. Phase
c. Amplitude
d. Time period
Answer  Explanation 

ANSWER: Frequency

Explanation:
No explanation is available for this question!
8)   Which among the following condition is true at the resonance?

a. Xc > XL
b. Xc = XL
c. Xc < XL
d. None of the above
Answer  Explanation 

ANSWER: Xc = XL

Explanation:
No explanation is available for this question!
9)   Which among the following get/s cancelled under the resonance condition in a.c. circuits, if inductive and capacitive reactances are in parallel?

a. Reactance
b. Susceptance
c. Resistance
d. All of the above
Answer  Explanation 

ANSWER: Susceptance

Explanation:
No explanation is available for this question!
10)   What would be the value of power factor for series RLC circuit under the resonance phenomenon?

a. 0
b. 0.5
c. 1
d. Infinity
Answer  Explanation 

ANSWER: 1

Explanation:
No explanation is available for this question!

Related Content

▲