MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
Consider the circuit below and find its cut-off frequency. R1=10kΩ, R2=20kΩ, R3=30kΩ, C1=2nF, C2=4nF, R4=15kΩ. |
| A. | 4.6 kHz |
| B. | 6.2 kHz |
| C. | 5.5 kHz |
| D. | 4.2 kHz |
| Answer» B. 6.2 kHz | |
| 2. |
A filter is provided of order 3, find the roll-off rate. |
| A. | 6 dB/decade |
| B. | 60 dB/octave |
| C. | 60 dB/decade |
| D. | 3 dB/decade |
| Answer» D. 3 dB/decade | |
| 3. |
For a low pass filter of non-inverting type, the cutoff frequency is 2kHz and the input frequency is 4kHz. Find the phase shift in output. |
| A. | 117° |
| B. | -117° |
| C. | 243° |
| D. | -63° |
| Answer» E. | |
| 4. |
Given the following circuit, find the maximum gain. |
| A. | 1+R2/R1 |
| B. | –R3/R2 |
| C. | 1+R3/R2 |
| D. | 1+ R1.R3/2 |
| Answer» D. 1+ R1.R3/2 | |
| 5. |
For the circuit, calculate the phase shift.It is given that R1=20kΩ, C1=2nF, R2=22kΩ, and input signal is 2sin6π103t. |
| A. | 233.04° |
| B. | 230.32° |
| C. | 333.04° |
| D. | 129.67° |
| Answer» B. 230.32° | |
| 6. |
When the input frequency is equal to the cutoff frequency, how much is the phase shift in the output? |
| A. | 180° |
| B. | -135° |
| C. | -45° |
| D. | 135° |
| Answer» E. | |
| 7. |
Given that the maximum gain of a low pass filter using op-amp is 5.5 and the resistor R1 = 10kΩ, find the value of R2. |
| A. | 220kΩ |
| B. | 55kΩ |
| C. | 50Ω |
| D. | -55kΩ |
| Answer» C. 50Ω | |
| 8. |
In a low pass filter as below, find the cut-off frequency for the following circuit.Given that R1=20kΩ, R2=25kΩ, C1=10nF. |
| A. | 640 kHz |
| B. | 636 Hz |
| C. | 5.5 kHz |
| D. | 200 Hz |
| Answer» C. 5.5 kHz | |
| 9. |
Which is not a difference between active and passive filter? |
| A. | A passive filter does not use op-amp while an active filter uses an op-amp |
| B. | A passive filter can’t use an inductor while an active filter can |
| C. | A passive filter performs only filtering while an active filter amplifies too |
| D. | A passive filter is used at audio frequency and an active at radio frequency |
| Answer» E. | |