1
GATE ECE 2007
MCQ (Single Correct Answer)
+2
-0.6
In the Op-Amp circuit shown, assume that the diode current follows the equation I = Is exp (V/VT) . For Vi = 2V, Vo = V01, and for Vi = 4 V, Vo = V02. The relationship between V01 and V02 is
A
$${V_{02}} = \,\sqrt 2 \,{V_{01}}$$
B
$${V_{02}} = {e^2}{V_{01}}$$
C
$${V_{02}} = {V_{01}}In\,2$$
D
$${V_{01}} - {V_{02}} = {V_T}In\,2$$
2
GATE ECE 2007
MCQ (Single Correct Answer)
+2
-0.6
Consider the OP-Amp circuit shown in the figure.

The transfer function $${V_o}\left( s \right)/{V_i}\left( s \right)$$ is

A
$${{1 - sRC} \over {1 + sRC}}$$
B
$${{1 + sRC} \over {1 - sRC}}$$
C
$${1 \over {1 - sRC}}$$
D
$${1 \over {1 + sRC}}$$
3
GATE ECE 2007
MCQ (Single Correct Answer)
+2
-0.6
Consider the OP-Amp circuit shown in the figure.

If $${V_i} = {V_1}\,\,\sin \left( {\omega \tau + \phi } \right),$$ then the minimum and maximum values of $$\phi$$ (in radians) are respectively

A
$$- \pi /2\,\,and\,\,\pi /2$$
B
0 and $$\pi /2$$
C
$$- \pi$$ and 0
D
$$- \pi /2\,\,$$ and 0
4
GATE ECE 2006
MCQ (Single Correct Answer)
+2
-0.6
For the circuit shown in the following figure, the capacitor C is initially uncharged. At t = 0, the switch S is closed. The voltage VC across the capacitor at t = 1 millisecond is

In the figure shown above, the OP-AMP is supplied with $$\pm$$ 15V.

A
0 Volts
B
6.3 Volts
C
9.45 Volts
D
10 Volts
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