1
GATE EE 2011
MCQ (Single Correct Answer)
+1
-0.3
A low–pass filter with a cut-off frequency of 30 Hz is cascaded with a high-pass filter with a cut-off frequency of 20 Hz. The resultant system of filters will function as
A
an all-pass filter
B
an all-stop filter
C
an band stop (band-reject) filter
D
a band–pass filter
2
GATE EE 2011
MCQ (Single Correct Answer)
+1
-0.3
The fourier series expansion $$$f\left(t\right)\;=\;a_0\;+\;\sum_{n=1}^\infty a_n\cos\;n\omega t\;+\;b_n\sin\;n\omega t$$$ of the periodic signal shown below will contain the following nonzero terms GATE EE 2011 Signals and Systems - Continuous Time Periodic Signal Fourier Series Question 24 English
A
$$a_0\;and\;b_n\;,\;n=1,\;3,\;5,\;..............\infty$$
B
$$a_0\;and\;a_n\;,\;n=1,\;2,\;3,\;..............\infty$$
C
$$a_0\;,\;a_n\;and\;b_n\;,\;n=1,\;2,\;3,\;..............\infty$$
D
$$a_0\;and\;a_n\;,\;n=1,\;3,\;5,\;..............\infty$$