Explore topic-wise MCQs in Alternating Current and Voltage .

This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Alternating Current and Voltage knowledge and support exam preparation. Choose a topic below to get started.

1.

Referring to Problem 23, the circuit\'s bandwidth is

A. 98.4 Hz
B. 9.8 Hz
C. 104.2 Hz
D. 10.4 Hz
Answer» D. 10.4 Hz
Discussion
2.

A parallel resonant band-pass filter consists of a 90 ohm resistor in series with a parallel network made up of a 60 mH coil and a 0.02 F capacitor. The output is taken across the capacitor/coil. The coil winding has a resistance of 20 ohm . What is

A. 4,591 Hz
B. 459 Hz
C. 2,176 Hz
D. 999 Hz
Answer» B. 459 Hz
Discussion
3.

A parallel resonant band-pass filter consists of a 6.8 ohm resistor in series with a parallel network made up of an 8 H coil and a 120 pF capacitor. The output is taken across the capacitor/coil. Assume RW = 0 ohm. What is the center frequency of t

A. 514 kHz
B. 5.14 MHz
C. 503 kHz
D. 5.03 MHz
Answer» C. 503 kHz
Discussion
4.

An RL high-pass filter consists of a 470 ohm resistor and a 600 mH coil. The output is taken across the coil. The circuit\'s critical frequency is

A. 1,250 Hz
B. 125 Hz
C. 5,644 Hz
D. 564 Hz
Answer» C. 5,644 Hz
Discussion
5.

An RC high-pass filter consists of an 820 resistor. What is the value of C so that X c is ten times less than R at an input frequency of 12 kHz?

A. 81 F
B. 161 F
C. 0.161 F
D. 220 F
Answer» D. 220 F
Discussion
6.

V out = 500 mV, and V in = 1.3 V. The ratio V out / V in expressed in dB is

A. 0 dB
B. 8.30 dB
C. –8.30 dB
D. 0.8 dB
Answer» D. 0.8 dB
Discussion
7.

An RC high-pass filter consists of a 0.2 F capacitor and a 220 resistor. The output is taken across the resistor. The circuit's critical frequency is

A. 723 Hz
B. 7,234 Hz
C. 362 Hz
D. 3,617 Hz
Answer» E.
Discussion
8.

A series resonant band-stop filter consists of a 68 resistor, a 110 mH coil, and a 0.02 F capacitor. The internal resistance, R W , of the coil is 4 . Input voltage is 200 mV. Output voltage is taken across the coil and capacitor in series. What is the output voltage magnitude at f 0 ?

A. 1.1 mV
B. 11.1 mV
C. 111 mV
D. 200 mV
Answer» C. 111 mV
Discussion
9.

In a certain low-pass filter, f c = 3.5 kHz. Its passband is

A. 0 Hz to 3.5 kHz
B. 0 Hz
C. 3.5 kHz
D. 7 kHz
Answer» B. 0 Hz
Discussion
10.

An RC low-pass filter consists of a 120 resistor and a 0.002 F capacitor. The output is taken across the capacitor. The circuit's critical frequency is

A. 333 kHz
B. 633 kHz
C. 331 kHz
D. 60 kHz
Answer» C. 331 kHz
Discussion
11.

A parallel resonant band-pass filter consists of a 6.8 resistor in series with a parallel network made up of an 8 H coil and a 120 pF capacitor. The output is taken across the capacitor/coil. Assume R W = 0 . What is the center frequency of the filter?

A. 5.14 MHz
B. 514 kHz
C. 5.03 MHz
D. 503 kHz
Answer» B. 514 kHz
Discussion
12.

A series resonant band-pass filter consists of a 2 mH coil, a 0.005 F capacitor, and a 120 resistor. The winding resistance of the coil is 12 . The output voltage is taken off the resistor. Input voltage is 12 V rms . What is the output voltage magnitude at the center frequency ( f 0 )?

A. 10.9 V
B. 1.09 V
C. 1.1 V
D. 12 V
Answer» B. 1.09 V
Discussion
13.

An RL high-pass filter consists of a 470 resistor and a 600 mH coil. The output is taken across the coil. The circuit's critical frequency is

A. 125 Hz
B. 1,250 Hz
C. 564 Hz
D. 5,644 Hz
Answer» B. 1,250 Hz
Discussion
14.

A parallel resonant band-pass filter consists of a 90 resistor in series with a parallel network made up of a 60 mH coil and a 0.02 F capacitor. The output is taken across the capacitor/coil. The coil winding has a resistance of 20 . What is the center frequency of the filter?

A. 459 Hz
B. 4,591 Hz
C. 999 Hz
D. 2,176 Hz
Answer» C. 999 Hz
Discussion