Explore topic-wise MCQs in Analog Circuits.

This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Circuits knowledge and support exam preparation. Choose a topic below to get started.

1.

If an electronic system produces a 48mV output voltage when a 12mV signal is applied, calculate the decibel value of the systems output voltage gain.

A. 12dB
B. 6dB
C. 20dB
D. 4dB
Answer» B. 6dB
Discussion
2.

If the output power from an audio amplifier is measured at 100W when the signal frequency is 1kHz, and 1W when the signal frequency is 10kHz. Calculate the dB change in power.

A. -10dB
B. -20dB
C. -30dB
D. 15dB
Answer» C. -30dB
Discussion
3.

Voltage gain of 1,00,000 is equivalent to __________

A. 10dB
B. 1000dB
C. 100dB
D. 50dB
Answer» D. 50dB
Discussion
4.

The frequency f1 and f2 from the below picture are respectively called ___________

A. lower cut-off frequency and upper cut-off frequency
B. upper cut-off frequency and lower cut-off frequency
C. left frequency, right frequency
D. there is no specific name
Answer» B. upper cut-off frequency and lower cut-off frequency
Discussion
5.

IF_AN_ELECTRONIC_SYSTEM_PRODUCES_A_48MV_OUTPUT_VOLTAGE_WHEN_A_12MV_SIGNAL_IS_APPLIED,_CALCULATE_THE_DECIBEL_VALUE_OF_THE_SYSTEMS_OUTPUT_VOLTAGE_GAIN.?$

A. 12dB
B. 6dB
C. 20dB
D. 4dB
Answer» B. 6dB
Discussion
6.

If the output power from an audio amplifier is measured at 100W when the signal frequency is 1kHz, and 1W when the signal frequency is 10kHz. Calculate the dB change in power?

A. -10dB
B. -20dB
C. -30dB
D. 15dB
Answer» C. -30dB
Discussion
7.

Voltage gain of 1,00,000 is equivalent to _________?

A. 10dB
B. 1000dB
C. 100dB
D. 50dB
Answer» D. 50dB
Discussion
8.

-6dB is equivalent to __________ power gain.

A. 0.5
B. 0.25
C. 0.75
D. 0.8
Answer» C. 0.75
Discussion
9.

What is the roll-off rate of single order filter?

A. 20dB/decade
B. 5dB/octave
C. 40dB/decade
D. 10dB/octave
Answer» B. 5dB/octave
Discussion
10.

A voltage amplifier has a voltage gain of 100. What will be gain at 3dB cut-off frequencies?

A. 70.7
B. 80.7
C. 45.7
D. 50
Answer» B. 80.7
Discussion
11.

At 3dB cut-off frequencies power will be __________

A. Half of maximum value
B. Quarter of maximum value
C. 70.7% of maximum value
D. Same as maximum value
Answer» B. Quarter of maximum value
Discussion
12.

At 3dB cut-off frequency the voltage gain will be __________

A. 100% of maximum gain
B. 70.7% of maximum gain
C. 80.7% of maximum gain
D. 47.5% of maximum gain
Answer» C. 80.7% of maximum gain
Discussion
13.

Bandwidth of amplifier is __________

A. Difference between upper cut-off frequency and lower cut-off frequency
B. Sum of upper cut-off frequency and lower cut-off frequency
C. Average of upper cut-off frequency and lower cut-off frequency
D. Independent to cut off frequency
Answer» B. Sum of upper cut-off frequency and lower cut-off frequency
Discussion