RLC Circuits And Resonance MCQ Questions & Answers | Electrical Engineering Page-3 section-1

21.
A 15 Ω resistor, a 220 µH coil, and a 60 pF capacitor are in series across an ac source. What is the bandwidth of the circuit?

A. 138 MHz

B. 10,866 Hz

C. 1,907 Hz

D. 138 kHz

Answer & Solution Discuss in Board Save for Later

22.
In a series RLC circuit, the current is minimum at resonance.

A. True

B. False

Answer & Solution Discuss in Board Save for Later

23.
A series resonant circuit is commonly called a tank circuit.

A. True

B. False

Answer & Solution Discuss in Board Save for Later

24.
A 10 Ω resistor, a 90 mH coil, and a 0.015 µF capacitor are in series across an ac source. The impedance magnitude at 1,200 Hz below f_r is

A. 1,616 Ω

B. 161 Ω

C. 3,387 Ω

D. 1,771 Ω

Answer & Solution Discuss in Board Save for Later

25.
At series resonance, the inductive reactance and capacitive reactance are never equal.

A. True

B. False

Answer & Solution Discuss in Board Save for Later

26.
A 90 Ω resistor, a coil with 30 Ω of reactance, and a capacitor with 50 Ω of reactance are in series across a 12 V ac source. The current through the resistor is

A. 9 mA

B. 90 mA

C. 13 mA

D. 130 mA

Answer & Solution Discuss in Board Save for Later

27.
The quality factor (Q) is the ratio of true power to apparent power.

A. True

B. False

Answer & Solution Discuss in Board Save for Later

28.
A 24 Ω resistor, an inductor with a reactance of 120 Ω, and a capacitor with a reactance of 120 Ω are in series across a 60 V source. The circuit is at resonance. The voltage across the inductor is

A. 60 V

B. 660 V

C. 30 V

D. 300 V

Answer & Solution Discuss in Board Save for Later

29.
X_L and X_C have opposing effects in an RLC circuit.

A. True

B. False

Answer & Solution Discuss in Board Save for Later

30.
A resonant circuit has a lower critical frequency of 7 kHz and an upper critical frequency of 13 kHz. The bandwidth of the circuit is

A. 6 kHz

B. 13 kHz

C. 20 kHz

D. 4 kHz

Answer & Solution Discuss in Board Save for Later

RLC Circuits And Resonance MCQ Questions & Answers | Electrical Engineering

21. A 15 Ω resistor, a 220 µH coil, and a 60 pF capacitor are in series across an ac source. What is the bandwidth of the circuit?

Answer & Solution

22. In a series RLC circuit, the current is minimum at resonance.

Answer & Solution

23. A series resonant circuit is commonly called a tank circuit.

Answer & Solution

24. A 10 Ω resistor, a 90 mH coil, and a 0.015 µF capacitor are in series across an ac source. The impedance magnitude at 1,200 Hz below fr is

Answer & Solution

25. At series resonance, the inductive reactance and capacitive reactance are never equal.

Answer & Solution

26. A 90 Ω resistor, a coil with 30 Ω of reactance, and a capacitor with 50 Ω of reactance are in series across a 12 V ac source. The current through the resistor is

Answer & Solution

27. The quality factor (Q) is the ratio of true power to apparent power.

Answer & Solution

28. A 24 Ω resistor, an inductor with a reactance of 120 Ω, and a capacitor with a reactance of 120 Ω are in series across a 60 V source. The circuit is at resonance. The voltage across the inductor is

Answer & Solution

29. XL and XC have opposing effects in an RLC circuit.

Answer & Solution

30. A resonant circuit has a lower critical frequency of 7 kHz and an upper critical frequency of 13 kHz. The bandwidth of the circuit is

Answer & Solution

21.
A 15 Ω resistor, a 220 µH coil, and a 60 pF capacitor are in series across an ac source. What is the bandwidth of the circuit?

22.
In a series RLC circuit, the current is minimum at resonance.

23.
A series resonant circuit is commonly called a tank circuit.

24.
A 10 Ω resistor, a 90 mH coil, and a 0.015 µF capacitor are in series across an ac source. The impedance magnitude at 1,200 Hz below f_r is

25.
At series resonance, the inductive reactance and capacitive reactance are never equal.

26.
A 90 Ω resistor, a coil with 30 Ω of reactance, and a capacitor with 50 Ω of reactance are in series across a 12 V ac source. The current through the resistor is

27.
The quality factor (Q) is the ratio of true power to apparent power.

28.
A 24 Ω resistor, an inductor with a reactance of 120 Ω, and a capacitor with a reactance of 120 Ω are in series across a 60 V source. The circuit is at resonance. The voltage across the inductor is

29.
X_L and X_C have opposing effects in an RLC circuit.

30.
A resonant circuit has a lower critical frequency of 7 kHz and an upper critical frequency of 13 kHz. The bandwidth of the circuit is