1
GATE ECE 1997
+3
-0.9
In the circuit of Fig., the current iD through the ideal diode (zero cut in voltage and zero forward resistance) equals
A
0 A
B
4 A
C
1 A
D
None of the above
2
GATE ECE 1997
+2
-0.6
In the circuit of Fig., energy absorbed by the 4 Ω registor in the time interval (0,$$\infty$$) is
A
36 Joules
B
16 Joules
C
256 Joules
D
None of the above
3
GATE ECE 1997
Subjective
+5
-0
In the circuit of Fig., all currents and voltage are sinusoids of frequency $$\omega$$ rad/sec.

(a) Find the impedance to the right of $$\left( {A,\,\,\,\,\,\,B} \right)$$ at $$\omega \,\,\, = \,\,\,\,0$$ rad/sec and $$\omega \,\,\, = \,\,\,\,\infty$$ rad/sec.

(b) If $$\omega \,\,\, = \,\,\,\,{\omega _0}$$ rad/sec and $${i_1}\left( t \right) = \,\,{\rm I}\,\,\,\sin \,\left( {{\omega _0}t} \right)\,{\rm A},$$ where $${\rm I}$$ is positive, $${{\omega _0}\,\, \ne \,\,0}$$, $${{\omega _0}\,\, \ne \,\,\infty }$$, then find $${\rm I}$$, $${{\omega _0}}$$ and $${i_2}\left( t \right)$$

4
GATE ECE 1997
MCQ (More than One Correct Answer)
+2
-0.6
In the circuil of Fig. the equivalent impedance seen across terminals A. B is
A
(16/3) $$\Omega$$
B
(8/3) $$\Omega$$
C
(8/3 + 12 j ) $$\Omega$$
D
None of the above
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