GATE EE 2015 Question Paper (07-Feb-2015) (Shift 2)

The operational amplifier shown in the figure is ideal. The input voltage (in Volt) is $V_i=2sin\left(2\pi \times 2000t\right)$. The amplitude of the output voltage $V_0$ (in Volt) is_____.

In the following circuit, the transistor is in active mode and $V_C=2V$. To get $V_C=4V$, we replace $R_C$ with $R{}_C^{\prime }$. Then the ratio $R{}_C^{\prime }/R_C$ is_____.

Consider the following sum of products expression, F

$F=ABC+\bar{A}\bar{B}C+A\bar{B}C+\bar{A}BC+\bar{A}\bar{B}\bar{C}$

The equivalent product of sums expression is

The filters F1 and F2 having characteristics as shown in Figures (a) and (b) are connected as shown in Figure (c).







The cut-off frequencies of F1 and F2 are $f_1$ and $f_2$ respectively. If $f_1<f_2$${}_{\text{­}}$, the resultant circuit exhibits the characteristics of a

When a bipolar junction transistor is operating in the saturation mode, which one of the following statements is TRUE about the state of its collector-base (CB) and the base-emitter (BE) junctions?