1
GATE EE 2022
+1
-0.33

The output impedance of a non-ideal operational amplifier is denoted by Zout. The variation in the magnitude of Zout with increasing frequency, f, in the circuit shown below, is best represented by

A
B
C
D
2
GATE EE 2022
+1
-0.33

The current gain (Iout/Iin) in the circuit with an ideal current amplifier given below is

A
$${{{C_f}} \over {{C_c}}}$$
B
$${{ - {C_f}} \over {{C_c}}}$$
C
$${{{C_c}} \over {{C_f}}}$$
D
$${{ - {C_c}} \over {{C_f}}}$$
3
GATE EE 2015 Set 1
+1
-0.3
Consider the circuit shown in the figure. In this circuit $$R = 1\,\,k\Omega ,$$ and $$C = 1\,\,\mu F.$$ The input voltage is sinusoidal with a frequency of $$50$$ $$Hz,$$ represented as a phasor with magnitude $${V_i}$$ and phase angle $$0$$ radian as shown in the figure. The output voltage is represented as a phasor with magnitude $${V_0}$$ and phase angle $$\delta$$ radian. What is the value of the output phase angle $$\delta$$ (in radian) relative to the phase angle of the input voltage?
A
$$0$$
B
$$\pi$$
C
$$\pi /2$$
D
$$- \pi /2$$
4
GATE EE 2015 Set 1
+1
-0.3
Of the four characteristics given below, which are the major requirements for an instrumentation amplifier?
P. $$\,\,\,\,$$High common mode rejection ratio
Q. $$\,\,\,\,$$High input impedance
R. $$\,\,\,\,$$High linearity
S. $$\,\,\,\,$$High output impedance
A
P, Q and R only
B
P and R only
C
P, Q and S only
D
Q, R and S only
EXAM MAP
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