GATE Electronics and Communication Engineering Question Paper 2013 download

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The clock frequency of an 8085 microprocessor is 5 MHz. If the time required to execute an instruction is 1.4 μs, then the number of T-states needed for executing the instruction is -gate Electronics and Communication 2017

201
A bar of Gallium Arsenide (GaAs) is doped with Silicon such that the Silicon atoms occupy Gallium and Arsenic sites in the GaAs crystal. Which one of the following statement is true? -gate Electronics and Communication 2017

101
The Miller effect in the context of a Common Emitter amplifier explains -gate Electronics and Communication 2017

201
In the latch circuit shown, the NAND gates have non-zero, but unequal propagation delays. The present input condition is: P = Q = 0. If the input condition is changed simultaneously to P = Q = 1, the outputs X and Y are -gate Electronics and Communication 2017

101
A good transconductance amplifier should have -gate Electronics and Communication 2017

101
Let (X1, X2) be independent random variables. X1 has mean 0 and variance 1, while X2 has mean 1 and variance 4. The mutual information I (X1 ; X2 ) between X1 and X2 in bits is ______ -gate Electronics and Communication 2017

101
Consider the following statements for continuous-time linear time invariant (LTI) systems. I. There is no bounded input bounded output (BIBO) stable system with a pole in the right half of the complex plane. II. There is non causal and BIBO stable system with a pole in the right half of the complex plane. Which one among the following is correct?

101
Which one of the following statements about differential pulse code modulation (DPCM) is true?

201
Consider a wireless communication link between a transmitter and a receiver located in free space, with finite and strictly positive capacity. If the effective areas of the transmitter and the receiver antennas, and the distance between them are all doubled, and everything else remains unchanged, the maximum capacity of the wireless link

201
Two discrete-time signals x[n] and h[n] are both non-zero for n = 0, 1, 2 and are zero otherwise. It is given that x[0]=1,x[1]=2,x[2]=1,h[0]=1.

201
The following FIVE instructions were executed on an 8085 microprocessor. MVI A, 33H MVI B, 78H ADD B CMA ANI 32H The Accumulator value immediately after the execution of the fifth instruction is

201
The following FIVE instructions were executed on an 8085 microprocessor. MVI A, 33H MVI B, 78H ADD B CMA ANI 32H The Accumulator value immediately after the execution of the fifth instruction is

101
The following FIVE instructions were executed on an 8085 microprocessor. MVI A, 33H MVI B, 78H ADD B CMA ANI 32H The Accumulator value immediately after the execution of the fifth instruction is

001
The following FIVE instructions were executed on an 8085 microprocessor. MVI A, 33H MVI B, 78H ADD B CMA ANI 32H The Accumulator value immediately after the execution of the fifth instruction is

001
The following FIVE instructions were executed on an 8085 microprocessor. MVI A, 33H MVI B, 78H ADD B CMA ANI 32H The Accumulator value immediately after the execution of the fifth instruction is

001
The following FIVE instructions were executed on an 8085 microprocessor. MVI A, 33H MVI B, 78H ADD B CMA ANI 32H The Accumulator value immediately after the execution of the fifth instruction is

201
She has a sharp tongue and it can occasionally turn _______.

201
In a DRAM,

201
An npn bipolar junction transistor (BJT) is operating in the active region. If the reverse bias across the base – collector junction is increased, then

201
Which of the following statements is incorrect?

101
A sinusoidal message signal is converted to a PCM signal using a uniform quantizer. The required signal-to-quantization noise ratio (SQNR) at the output of the quantizer is 40dB

101
Consider the random process X(t)= U +Vt, where U is a zero-mean Gaussian random variable and V is a random variable uniformly distributed between 0 and 2.

101
The smaller angle (in degrees) between the planes x + y + z =1

101
The un-modulated carrier power in an AM transmitter is 5kW. This carrier is modulated by a sinusoidal modulating signal. The maximum percentage of modulation is 50%. If it is reduced to 40%, then the maximum un-modulated carrier power (in kW)

101
The un-modulated carrier power in an AM transmitter is 5kW. This carrier is modulated by a sinusoidal modulating signal. The maximum percentage of modulation is 50%. If it is reduced to 40%, then the maximum un-modulated carrier power (in kW)

101
The un-modulated carrier power in an AM transmitter is 5kW. This carrier is modulated by a sinusoidal modulating signal. The maximum percentage of modulation is 50%. If it is reduced to 40%, then the maximum un-modulated carrier power (in kW) that can be used without overloading the transmitter

101
The un-modulated carrier power in an AM transmitter is 5kW. This carrier is modulated by a sinusoidal modulating signal. The maximum percentage of modulation is 50%. If it is reduced to 40%, then the maximum un-modulated carrier power (in kW) that can be used without

101
The un-modulated carrier power in an AM transmitter is 5kW. This carrier is modulated by a sinusoidal modulating signal. The maximum percentage of modulation is 50%. If it is reduced to 40%, then the maximum un-modulated carrier power (in kW) that can be used without overloading the transmitter is

101
The un-modulated carrier power in an AM transmitter is 5kW. This carrier is modulated by a sinusoidal modulating signal. The maximum percentage of modulation is 50%. If it is reduced to 40%, then the maximum un-modulated carrier power (in kW) that can be used without

101
In the circuit shown, V is a sinusoidal voltage source. The current I is in phase with voltage V.

101
In the circuit shown, V is a sinusoidal voltage source. The current I is in phase with voltage V.

001
Consider the state space realization

001
The rank of the matrix

001
The input x(t) and the output y (t) of a continuous-time system are related as

101
An LTI system with unit sample response

001
The general solution of the differential equation

001
The output V0 of the diode circuit shown in the figure is connected to an averaging DC voltmeter. The reading on the DC voltmeter in Volts, neglecting the voltage drop across the diode, is ____________.

001
Consider the circuit shown in the figure. Assume base-to- emitter voltage

001
The values of the integrals

001
Consider a binary memory less channel characterized by the transition probability diagram

001
An abrupt pn junction (located at x = 0) is uniformly doped on both p and n sides. The width of the depletion region is W and the electric field variation in the x-direction is E(x). Which of the following figures represents the electric field profile near the pn junction?

101
Consider the parallel combination of two LTI systems shown in the figure.

101
Assuming that transistors M1 and M2 are identical and have a threshold voltage of 1V, the state of transistors M1 and M2 are respectively

201
The minimum value of the function

201
The switch in the circuit, shown in the figure, was open for a long time and is closed at t = 0.

201
The state diagram of a finite state machine (FSM) designed to detect an overlapping sequence of three bits is shown in the figure. The FSM has an input In and an output Out. The initial

201
Standard air – filled rectangular waveguides of dimensions a = 2.29 cm and b= 1.02 cm are designed for radar applications. It is desired that these waveguides operate only in the dominatnt

201
In the circuit shown, transistors Q1 and Q2 are biased at a collector current of 2.6mA. Assuming that transistor current gains are sufficiently large to assume collector current equal to emitter current and thermal voltage of 26 mV, the magnitude of voltage gain

201
Consider a single input single output discrete-time system with x[n] as input and y[n] as output, where the two are related as

201
Consider the following statement about the linear dependence of the real valued functions

201
Consider the 5 × 5 matrix

202
The rank of the matrix

201
Consider the D-Latch shown in the figure, which is transparent when its clock input CK is high and has zero propagation delay. In the figure, the clock signal CLK1 has a 50% duty cycle and CLK2 is a one-fifth period delayed version of CLK1. The duty cycle at the output latch in percentage is ___________.

001
In a digital communication system, the overall pulse shape p(t) at the receiver before the sampler has the Fourier transform P(f). If the symbols are transmitted at the rate of 2000 symbols per second, for which of the following cases is inter symbol interference zero?

201
Consider the following statements for continuous-time linear time invariant (LTI) systems

201
A linear time invariant (LTI) system with the transfer function

201
Which one of the following options correctly describes the locations of the roots of the equation

201
The Nyquist plot of the transfer function

201
A three dimensional region R of finite volume is described by

201
Which one of the following gives the simplified sum of products expression for the Boolean function

101

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