In discrete signal, if y [n] = x [k*n] and k>1 then ______

Some samples are added to x [n]

Some samples are lost from x [n]

Some samples are added to x [n]

Samples will be increased with factor k

Y (t) = x (t/5) is _______

Amplitude scaled signal by factor 1/5

Y (t) = x (2t) is ________

Amplitude scaled signal by a factor of 2

Explore topic-wise MCQs in Signals & Systems.

This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Signals & Systems knowledge and support exam preparation. Choose a topic below to get started.

1.	In discrete signal, if y [n] = x [k*n] and k>1 then ______
A.	Some samples are lost from x [n]
B.	Some samples are added to x [n]
C.	It has no effect on samples
D.	Samples will be increased with factor k
Answer» B. Some samples are added to x [n]

Discussion

2.	Y (t) = x (t/5) is _______
A.	Compressed signal
B.	Expanded signal
C.	Time shifted signal
D.	Amplitude scaled signal by factor 1/5
Answer» C. Time shifted signal

Discussion

3.	Y (t) = x (2t) is ________
A.	Compressed signal
B.	Expanded signal
C.	Shifted signal
D.	Amplitude scaled signal by a factor of 2
Answer» B. Expanded signal

Discussion