1
GATE ECE 2004
+2
-0.6
For the lattice circuit shown in Fig., $${Z_a} = j\,2\,\Omega \,\,and\,\,{Z_b} = \,\,2\Omega$$. The values of the open circuit impedance parameters
$$Z\,\left[ {\matrix{ {{Z_{11}}} & {{Z_{12}}} \cr {{Z_{21}}} & {{Z_{22}}} \cr } } \right]\,$$ are
A
$$\,\left[ {\matrix{ {1 - j} & {1 + j} \cr {1 + j} & {1 + j} \cr } } \right]$$
B
$$\,\left[ {\matrix{ {1 - j} & {1 + j} \cr {-1 + j} & {1 - j} \cr } } \right]$$
C
$$\,\left[ {\matrix{ {1 + j} & {1 + j} \cr {1 - j} & {1 - j} \cr } } \right]$$
D
$$\,\left[ {\matrix{ {1 + j} & {1 + j} \cr {-1 + j} & {1 + j} \cr } } \right]$$
2
GATE ECE 2004
+2
-0.6
For the circuit shown in Figure, the initial conditions are zeros. Its transfer function $$H(s) = {{{V_c}\,(s)} \over {{V_i}\,(s)}}$$ is
A
$${1 \over {{s^2}\, + \,{{10}^6}\,s\, + \,{{10}^6}}}$$
B
$${{{{10}^6}} \over {{s^2}\, + \,{{10}^3}\,s\, + \,{{10}^6}}}$$
C
$${{{{10}^3}} \over {{s^2}\, + \,{{10}^3}\,s\, + \,{{10}^6}}}$$
D
$${{{{10}^6}} \over {{s^2}\, + \,{{10}^6}\,s\, + \,{{10}^6}}}$$
3
GATE ECE 2003
+2
-0.6
The impedance parameters Z11 and Z12 of the two-port network in figure are
A
Z11 = 2.75Ω and Z12 =0.25Ω
B
Z11 = 3Ω and Z12 =0.5Ω
C
Z11 = 3Ω and Z12 =0.25Ω
D
Z11 = 2.25Ω and Z12 =0.5Ω
4
GATE ECE 2003
+2
-0.6
The driving-point impedance Z(s) of a network has the pole-zero locations as shown in figure. If Z(0) = 3, then Z(s) is
A
$${{3\,(s + 3)} \over {{s^2}\, + \,2s\, + 3}}$$
B
$${{2\,(s + 3)} \over {{s^2}\, + \,2s\, + 2}}$$
C
$${{3\,(s - 3)} \over {{s^2}\, - \,2s\, - 3}}$$
D
$${{2\,(s - 3)} \over {{s^2}\, - \,2s\, - 3}}$$
EXAM MAP
Medical
NEET