MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
What is the use of the compensation capacitor in op-amp? |
| A. | Improves the amplification of op-amp |
| B. | Decreases the slew rate of op-amp |
| C. | Increases the bandwidth of op-amp |
| D. | Op-amp acts as all pass filter |
| Answer» C. Increases the bandwidth of op-amp | |
| 2. |
Till what frequency do we get amplification from IC 741? |
| A. | Unity gain bandwidth |
| B. | 3-dB frequency |
| C. | Infinity |
| D. | UGB + f<sub>OL</sub> |
| Answer» B. 3-dB frequency | |
| 3. |
The unity gain bandwidth for an op-amp having open loop gain 2 106 is 10 Mhz. Calculate the AC gain of op-amp at an input of 2000 Hz. |
| A. | 2000 |
| B. | 5000 |
| C. | 10000 |
| D. | 12.5 |
| Answer» C. 10000 | |
| 4. |
Given that CMRR is 100dB. Input common-mode voltage is 12 V. Differential voltage gain is 4000. Calculate output common-mode voltage. |
| A. | 48V |
| B. | 0.48V |
| C. | 20V |
| D. | 11V |
| Answer» C. 20V | |
| 5. |
Given that for an op-amp the gain is 103, the slew rate is 1.5V/ sec. Input is 5 10-3sin t, calculate maximum frequency to prevent distortion. |
| A. | 47.7 kHz |
| B. | 0.3 MHz |
| C. | 477 Hz |
| D. | 3 kHz |
| Answer» B. 0.3 MHz | |
| 6. |
A practical op-amp has a bandwidth of only 10 Hz. Gain is 106, and the required bandwidth is 100 kHz. How much feedback is required? |
| A. | 0.99% negative feedback |
| B. | 0.99% positive feedback |
| C. | 1% negative feedback |
| D. | 1% positive feedback |
| Answer» B. 0.99% positive feedback | |
| 7. |
In an ideal op-amp, which is not true? |
| A. | Open loop voltage gain is infinite |
| B. | Input resistance is infinite |
| C. | Slew rate is infinite |
| D. | CMRR is zero |
| Answer» E. | |
| 8. |
Which of these is incorrect for an operational amplifier? |
| A. | It has a high voltage gain |
| B. | It is a direct coupled amplifier |
| C. | It is only useful for amplifying AC signals |
| D. | It was originally designed to perform mathematical operations |
| Answer» D. It was originally designed to perform mathematical operations | |