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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
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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
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The Miller effect in the context of a Common Emitter amplifier explains -gate Electronics and Communication 2017
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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
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A good transconductance amplifier should have -gate Electronics and Communication 2017
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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
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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?
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Which one of the following statements about differential pulse code modulation (DPCM) is true?
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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
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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.
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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
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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
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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
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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
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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
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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
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She has a sharp tongue and it can occasionally turn _______.
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In a DRAM,
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An npn bipolar junction transistor (BJT) is operating in the active region. If the reverse bias across the base – collector junction is increased, then
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Which of the following statements is incorrect?
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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
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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.
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The smaller angle (in degrees) between the planes x + y + z =1
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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)
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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)
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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
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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
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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
| 1 | 0 | 1 |

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
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In the circuit shown, V is a sinusoidal voltage source. The current I is in phase with voltage V.
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In the circuit shown, V is a sinusoidal voltage source. The current I is in phase with voltage V.
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Consider the state space realization
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The rank of the matrix
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The input x(t) and the output y (t) of a continuous-time system are related as
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An LTI system with unit sample response
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The general solution of the differential equation
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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 ____________.
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Consider the circuit shown in the figure. Assume base-to- emitter voltage
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The values of the integrals
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Consider a binary memory less channel characterized by the transition probability diagram
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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?
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Consider the parallel combination of two LTI systems shown in the figure.
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Assuming that transistors M1 and M2 are identical and have a threshold voltage of 1V, the state of transistors M1 and M2 are respectively
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The minimum value of the function
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The switch in the circuit, shown in the figure, was open for a long time and is closed at t = 0.
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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
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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
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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
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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
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Consider the following statement about the linear dependence of the real valued functions
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Consider the 5 × 5 matrix
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The rank of the matrix
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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 ___________.
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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?
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Consider the following statements for continuous-time linear time invariant (LTI) systems
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A linear time invariant (LTI) system with the transfer function
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Which one of the following options correctly describes the locations of the roots of the equation
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The Nyquist plot of the transfer function
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A three dimensional region R of finite volume is described by
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Which one of the following gives the simplified sum of products expression for the Boolean function
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