73701. Which of the following conditions must be satisfied for a transistor to remain under saturation? Its collector to base junction should be under forward bias.Its collector to base junction should be under reverse bias.Its emitter to base junction should be under reverse bias.Its emitter to base junction should be under forward bias. Select the correct answer from the codes given below:
73702. Voltage 1 + 2 sin ωt is applied to the circuit shown below:The capacitor C and diode D can be considered ideal. RL is very large resistance. Then the magnitude of the average voltage across RL is __________ volt.
73703. A bearing noted 450NE represents
73704. Signal x(t) is shown below: The values of `t' for which x(3t - 2) will be zero are:
73705. The maximum concentration of the element which can be dissolved in solid silicon at a given temperature is termed as
73706. What is the purpose of DMA facility in microprocessor based system?
73707. The fuse material used in electrical lines must have which one of the following properties?
73708. With respect to transmission parameters, which one of the following is correct?
73709. For detecting a sequence 1011 which is the correct state diagram representation.
73710. In the circuit, shown in figure, V0 = Vi. The values of 1, m, n are: (x represents don't care conditions)
73711. In the design of a single mode step index optical fiber close to upper cut-off, the single mode operations is NOT preserved if
73712. For a message signal m(t) = cos (2p fmt) and the carrier frequency fc, which of the following represents a single side band (SSB) signal?
73713. In the circuit shown below, the op-amp is ideal, the transistor has VBE = 0.6 V and β = 150. Decide whether the feedback in the circuit is positive or negative and determine the voltage V at the output of the op-amp
73714. Which of the following addressing modes is used in the instruction PUSH B?
73715. Consider a silicon p-n junction at room temperature having the following parameters:Doping on the n-side = 1 x 1017 cm-3Depletion width on the n-side = 0.1 μmDepletion width on the p-side = 1.0 μmIntrinsic carrier concentration = 1.4 x 1014F. cm-1.Thermal voltage = 26mVPermittivity of free space = 8.85 x 10-14F. cm-1.Dielectric constant of silicon = 12. The peak electric field in the device is
73716. A single turn loop is situated in air, with a uniform magnetic field normal to its plane. The area of the loop is 5 m2 and the rate of change of flux density is 2 Wb/m2/s. What is the emf appearing at the terminals of the loop?
73717. A compensated wattmeter has its reading corrected for error due to which one of the following parameters?
73718. Personal computer cannot be used for which one of the following?
73719. Which of the following output configurations are available in a TTL gate? Open collector outputTotem pole outputTristate output Select the correct answer from the codes given below:
73720. Which of the following be true for a CE transistor amplifier if the emitter resistor value is made equal to zero? Its gain will increaseIts stability will increaseIts gain will decreaseIts stability will decrease Select the correct answer from the codes given below
73721. The feedback control system shown in figure is stable.
73722. Assertion (A): The expression E = - ΔV, where E is the electric field and V is the potential is not valid for time varying fields.Reason (R): The curl of a gradient is identically zero.
73723. At 20 GHz , the gain of a parabolic dish antenna of 1 meter diameter and 70% efficiency is
73724. Hysteresis loss in a transformer working at 220 V and at a frequency of 50 Hz is 100 W. When the transformer is operated at 220 V and at a frequency of 100 Hz, what is the hysteresis loss?
73725. The pole-zero plot given below corresponds to a
73726. Given below impulse response of two system h1(n) = [x(n + 1) - 2x(n) + 3x(n - 1)] h2(t) = e-2t u(4 - t) The correct statement is:
73727. The Gain margin for the system with open loop transfer function :
73728. In the circuit shown, what value of RL maximizes the power delivered to RL?
73729. The system which is unstable is __________ .
73730. Which of the following is not an electromagnetic device?
73731. In which direction is the plane wave E = 50 sin (108t + 2z) V/m (where is the unit vector in y-direction), travelling?
73732. Which one of the following compounds is widely used for making ferrites?
73733. Assertion (A): Cut-in voltage for Germanium diode is greater than that for silicon diode.Reason (R): Germanium diode has a higher reverse saturation current than silicon diode.
73734. Laplace transform of unit triplet function is __________ .
73735. What can be the maximum dimension of an array in C language program?
73736. Choose the correct statement
73737. Which of the following modes can exist in a rectangular waveguide?
73738. For plane wave propagating in free space or two conductor transmission line, what must be the relationship between the phase velocity vp , the group velocity vg and speed of light c?
73739. The silicon sample with unit cross-sectional area shown below is in thermal equilibrium. The following information is given: T = 300 K, electronic charge = 1.6 x 10-19C, thermal voltage = 26mV and electron mobility = 1350 cm2/V-sThe magnitude of the electric field at x = 0.5 μm is
73740. Assertion (A): The small signal analysis of a transistor amplifier is done to obtain the current gain, voltage gain and the conversion efficiency of an amplifier.Reason (R): The small signal analysis of a transistor amplifier uses the small signal parameters of the transistor.
73741. Following information is given: x(z) has two poles at z = and z = - 1x(1) = 1, x(- 1) = 1ROC includes Then x(n) is:
73742. Average power for δ(t )dt signal is __________ .
73743. The feedback configuration and the pole-zero locations of G(s) are shown below. The root locus for negative values k, i.e., for -∞ < k < 0, has breakaway/break in points and angle of departure at pole P (with respect to the positive real axis) equal to
73744. Consider the following, logic diagram :The count sequence of the above logic diagram is :
73745. Which of the following has a major role in implementation of functions calls in C?
73746. Effective Q of the equivalent electrical circuit of quartz crystal is of the order of
73747. Two linearly polarized plane waves A and B travelling in free space in the positive x direction meet at a point. Wave A is polarized in the y direction and the wave B is polarized in the z direction. If the two waves are of equal amplitude and are in phase quadrature, the resultant wave will be
73748. Consider the following statements regarding an antenna: It is a transducerIts performance is essentially frequency sensitiveIt is a reciprocal deviceWith increase in its effective aperture area, width of the radiated beam increases. Which of the above statements are correct?
73749. The range of memory location in given memory interfacing scheme is
73750. What was the first commercial geostationary communication satellite?
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