MCQOPTIONS
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MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Control Systems knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A digital measuring instrument employs a sampling rate of 100 samples/second. The sampled input x(n) is averaged using the difference equation:Y (n) =[x (n)+x (n-1)+x(n-2)+x(n-4)/4]For a step input, the maximum time taken for the output to reach the final value after the input transition is |
| A. | t20 ms |
| B. | t40 ms |
| C. | t80 ms |
| D. | t |
| Answer» C. t80 ms | |
| 2. |
A signal represented by x(t) =5cos 400 t is sampled at a rate 300 samples/sec. The resulting samples are passed through an ideal low pass filter of cut-off frequency 150 Hz. Which of the following will be contained in the output of the LPF? |
| A. | t100 Hz |
| B. | t100 Hz, 150 Hz |
| C. | t50 Hz, 100 Hz |
| D. | t50 Hz, 100 Hz, 150 Hz |
| Answer» B. t100 Hz, 150 Hz | |
| 3. |
Statement (I): Aliasing occurs when the sampling frequency is less than twice the maximum frequency in the signal.Statement (II): Aliasing is a reversible process. |
| A. | tBoth statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I). |
| B. | tBoth Statement (I) and Statement (II) are individually true but Statement (II) is not correct explanation of Statement (I) |
| C. | tStatement (I) is true but Statement (II) is false |
| D. | tStatement (I) is False but Statement (II) is true |
| Answer» D. tStatement (I) is False but Statement (II) is true | |