1
GATE ECE 2010
+1
-0.3
For parallel RLC circuit, which one of the following statements is NOT correct?
A
The bandwidth of the circuit deceases if R is increased
B
The bandwidth of the circuit remains same if L is increased
C
At resonance, input impedance is a real quantity
D
At resonance, the magnitude of input impedance attains its minimum value.
2
GATE ECE 2007
+1
-0.3
The RC circuit shown in the figure is

A
a low-pass filter
B
a high-pass filter
C
a band-pass filter
D
a band-reject filter
3
GATE ECE 2005
+1
-0.3
In a series $$RLC$$ circuit $$R = 2\,k\Omega ,\,\,\,L = \,1H$$ and $$C = \,1/400\,\mu F.$$ The resonant frequency is
A
$$2 \times {10^4}\,Hz$$
B
$${1 \over \pi } \times {10^4}\,Hz$$
C
$${10^4}\,Hz$$
D
$$2\pi \times {10^4}\,Hz$$
4
GATE ECE 2004
+1
-0.3
For the circuit shown in figure, the time constant $$RC = 1$$ $$ms$$. The input voltage is $${v_i}\left( t \right) = \sqrt 2 \,\sin \,{10^3}t$$. The output voltage $${v_0}\left( t \right)$$ is equal to
A
$$\sin \left( {{{10}^3}t - {{45}^0}} \right)$$
B
$$\sin \left( {{{10}^3}t + {{45}^0}} \right)$$
C
$$\sin \left( {{{10}^3}t - {{53}^0}} \right)$$
D
$$\sin \left( {{{10}^3}t + {{53}^0}} \right)$$
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