73601. A balanced modulator is used in the generation of which of the following?
73602. Separation property of state-transition matrix is
73603. In a conventional AM superhetrodyne receivers, the detectors employed to extract intelligence include
73604. Assertion (A): The h-parameter model of a BJT can be derived from its hybrid-p model and vice-versa.Reason (R): The hybrid-p model has many more additional elements as compared to h-parameter model of the BJT.
73605. The input to a binary communication system, denoted by a random variable x, takes on one of the two values 0 or 1 with probabilities and . The behaviour of the communication system is modelled byP(Y = 1 |x = 1|) = and P(Y = 0|x = 0) = P(x = 1|y = 1) =
73606. The Function F = ∑(0, 3, 4, 5, 7) is implemented using the multiplexer then Identify the correct one :
73607. Which of the following Boolean algebra rules is correct?
73608. The Table given below is the mark obtained by 2 students in 8 different subjects. The coefficient of correlation is:
73609. In PSK modulation, the input signal is :
73610. Which of the following statements about the matched filter in a communication receiver are correct? Its impulse response depends on the signed shapeIt maximizes the SNR at the detection shape.It produces ISI.It may produce phase error if synchronization is improper. Select the correct answer from the codes given below:
73611. For a given data rate, the bandwidth required with M-array PSK transmission is smaller than that of a binary transmission by
73612. In a microprocessor, the service routine for a certain interrupt starts from a fixed location of memory which cannot be externally set, but the interrupt can be delayed or rejected. Such an interrupt is
73613. Which one of the following statements is not correct with regard to power amplifiers?
73614. Which of the following cannot provide as much time interval accuracy as the oscilloscope but can capture and display eight or more signals simultaneously, something that scopes cannot do?
73615. A DC voltage source is connected across a series R - L - C circuit. Under steady-state conditions, the applied DC voltage drops entirely across the
73616. Consider the voltage transfer characteristic of a standard CMOS inverterwhere region A corresponds to
73617. Assertion (A): Ideal current sources and ideal voltage sources do not exist in reality.Reason (R): All sources have finite internal impedances.
73618. A signal occupies a band 5 kHz to 10 kHz. For proper error free reconstruction at what rate it should be sampled?
73619. Which of the following circuits come under the class of combinational logic circuits? Full adderFull subtractorHalf adderJ-K flip-flopCounter Select the correct answer from the codes given below:
73620. Consider a 565 PLL with RT = 10 kΩ and CT = 0.01 μF. What is the output frequency of the VCO?
73621. At room temperature, a possible value for the mobility of electrons in the inversion layer of a silicon n-channel MOSFET is
73622. A series R-C circuit with R = 3 Ω and XC = 4 Ω at 50 Hz is supplied with a voltage V = 50 + 141.4 sin 314 t. What is the RMS value of the current flowing through the circuit?
73623. The amplitude of a random signal uniformly distributed between - 5 V and 5 VIf the signal to quantization noise ratio required in uniformly quantizing the signal is 4.5dB, the step size of the quantization is approximately
73624. In TV transmission the modulation schemes for video and audio are respectively
73625. Consider the differential amplifier shown in figure. (Assume β is very high).VC =
73626. Find Leq if each L is 1 H
73627. The output of a Mealy system is 1 if there has been a pattern of 11000, otherwise 0. The minimum state for this system is :
73628. The property not valid for basic singularity function is
73629. The resolution of a DAC depends on which of the following?
73630. When number of quantization levels are two; then the average transmission power in NRZ polar signaling is __________ that of NRZ unipolar signaling
73631. X(t) is a stationary process with the power spectral density Sx(f) > 0 for all f. The process is passed through a system shown below.Let Sy, (f) be the power spectral density Y(t). Which one of the following statements is correct?
73632. In the following astable multivibrator circuit, which properties of v0(t) depends on R2?
73633. Consider the following statements, regarding an OP AMP: All types of negative feedback reduce non-linear distortion.All types of negative feedback reduce the output offset voltage.Non-inverting (current and voltage) feedback increases the input impedance.Inverting (current and voltage) feedback decreases input impedance. Which of the above statements is/are correct?
73634. Which one of the following is applicable to any network-linear or non-linear, active or passive, time-varying or invariant - as long as Kirchhoff laws are not violated?
73635. The input and output of a continuous time system are respectively denoted by x(t) and y(t) Which of the following descriptions corresponds to a causal system?
73636. Which of the following bridges is also used in an oscillator?
73637. Polarization is a measure of
73638. Thin gate oxide in a CMOS process in preferably grown using
73639. Which of the following devices is a 'hot-electron' diode?
73640. If D, G and η denote the directly, power gain and efficiency of an antenna, then which of the following relation holds :
73641. A system described by the transfer function is stable. The constraints on a and K are
73642. Consider a random noise voltage which has a uniform density function as shown in the figure and is known to be white.If the noise is the first quantized into 0.1 V steps, starting at 0 V level, and then readings made of 10 per second. The information content of the reading is :
73643. Consider the following statements:The bias stability of an emitter-bias amplifier circuit improves by decreasing the value of RBincreasing the value of REdecreasing the value of RBincreasing the value of RBincreasing the value of RC Which of the above statements are correct?
73644. Consider the following: SiGeGaAsInP Which of the above semiconductors should be used for making highly efficient photodiodes?
73645. Which device can detect the presence of both forward and backward waves in a waveguide?
73646. The correct sequence of subsystems in an FM receiver is
73647. The full form of the abbreviations TTL and CMOS in reference to logic families are
73648. In which one of the following types of analog to digital converts the conversion time is practically independent of the amplitude of the analog signal?
73649. The constraint on r = |z| for which the following non-causal system converges is
73650. Consider the following statements:The conductivity of a metal has negative temperature coefficient since: The electron concentration increases with temperature.The electron mobility decreases with temperature.The electron-lattice scattering rate increases with temperature. Which of the above statements is/are correct?
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use
Powered By:Omega Web Solutions