GATE EC question library

In the figure is $\mathrm{A}^{1} \mathrm{~A}^{2}$ and $\mathrm{A}^{3}$ are ideal ammeters. If $\mathrm{A}^{1}$ reads $5 \mathrm{A}, \mathrm{~A}^{2}$ reads $12 \mathrm{A}$, then $\mathrm{A}^{3}$ should read.

The two electrical sub network $N^{1}$ and $N^{2}$ are connected through three resistors as shown in the figure. The voltage across $5 \; \mathrm{ohm}$ resistor and $1 \; \mathrm{ohm}$ resistor are given to be $10 \mathrm{~V}$ and $5 \mathrm{~V}$, respectively. Then voltage across $15 \; \mathrm{ohm}$ resistor is

A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled, then the voltage across each resistor is

The built-in potential (Diffusion Potential) in a $p-n$ junction

In a multicavity magnetron, strapping is employed primarily

The beamwidth-between-first null of uniform linear array of $\mathrm{N}$ equally-spaced (element spacing $=d$ ), equally-excited antennas is determined by

Two dissimilar antennas having their maximum directivities equal,

Which of the following statements is/are correct?

A transmission line whose characteristic impedance is a pure resistance

Source encoding in a data communication system is done is order to

Coherent demodulation of $\text{FSK}$ signal can be effected using

The bit stream $01001$ is differentially encoded using $\text{'Delay and Ex OR'}$ scheme for $\text{DPSK}$ transmission. Assuming the reference bit as a $'1'$ and assigning phases of $'0'$ and $\pi$ for $1$’s and $0$’s respectively, in the encoded sequence, the transmitted phase sequence becomes

For a random variable $x$ following the probability density function, $\mathrm{p}(x)$, shown in given figure the mean and the variance are, respectively,

The maximum power efficiency of an $\text{AM}$ modulator is

If $G(f)$ represents the Fourier transform of a signal $g$ (t) which is real and odd symmetric in time, then

Which of the following signals is/are periodic?

Dual-slope integration type Analog-to-digital converters provide

In an $8085$ microprocessor system with memory mapped $\text{I} / \mathrm{O}$,

The initial contents of the $4$-bit serial-in-parallel-out, right-shift, Shift. Register shown in given figure is $0110$. After three clock pulses are applied, the contents of the Shift Register will be

Given figure shows the circuit of a gate in the Resistor Transistor Logic $\text{(RTL)}$ family. The circuit represents a