Explore topic-wise MCQs in Control Systems.

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
Discussion
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
Discussion
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
Discussion