1
GATE EE 2014 Set 1
+1
-0.3
For a periodic square wave, which one of the following statements is TRUE?
A
The Fourier series coefficients do not exist
B
The Fourier series coefficients exist but the reconstruction converges at no point
C
The Fourier series coefficients exist and the reconstruction converges at most points.
D
The Fourier series coefficients exist and the reconstruction converges at every point
2
GATE EE 2011
+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
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
$$a_0\;and\;a_n\;,\;n=1,\;3,\;5,\;..............\infty$$
3
GATE EE 2010
+1
-0.3
The second harmonic component of the periodic waveform given in the figure has an amplitude of
A
0
B
1
C
$$2/\mathrm\pi$$
D
$$\sqrt5$$
4
GATE EE 2010
+1
-0.3
The period of the signal $$x\left(t\right)=8\sin\left(0.8\mathrm{πt}+\frac{\mathrm\pi}4\right)$$ is
A
$$0.4\;\mathrm\pi\;\mathrm s$$
B
$$0.8\;\mathrm\pi\;\mathrm s$$
C
1.25 s
D
2.5 s
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