60651. Consider the network: Impedance of this network as a function of the complex frequency is consists of a certain number of zeros and poles. What is the location of poles?
60652. Which of the following is the main objectives of Amnesty International?
60653. Consider the following statements:
In a microstrip line Wavelength , where eff is the effective dielectric constant and 1 is the free space wavelength.Electromagnetic fields exist partly in the air above the dielectric substrate and partly within the substrate itself.The effective dielectric constant is greater than the dielectric constant of the air.Conductor losses increase with decreasing characteristic impedance. Which of the above statements is/are correct?
60654. In the circuit below, if diodes and the moving coil millimeter are assumed to be ideal if mA reading is , find Vm.
60655. What current does represent in pn junction diode? (where the symbols have their usual meaning)
60656. What happens when a paramagnetic material is heated above Curie temperature?
60657. How many roots with positive real parts do the equation s3 + s2 - s + 1 = 0 have?
60658. In a communication system, a process in which statistical averages and time averages are equal is called as,
60659. The materials not having negative temperature coefficient of resistivity are
60660. 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 by
P(Y = 1 |x = 1|) = and P(Y = 0|x = 0) =
Find P(Y = 1)
60661. Consider an AM system using a square law detector as shown in figure.
XC(t) = AC[1 + u x (t)] cos ωct, |ux(t)| << 1
The signal power at the output is :
60662. Thermal noise is passed through an ideal low-pass filter having cut-off at fc = ωHz. The auto correlation value of the noise at the output of the filter is given as
60663. For dielectric to dielectric interface with surface charge density, which of the following statements are true? Dn2 - Dn1 = r sEt1 = Et2En1 = En2
60664. Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].
Assertion : FETs are more suitable at the input stages compared to BJTs
Reason: A FET has lower output impedance than a BJT.
60665. What are the ultimate purpose of minimizing logic expressions? To get small size expression.To reduce the number of variables in the given expression.To implement the function of the logic expression with least hardware.To reduce the expression for making it feasible for hardware implementation. Select the correct answer from the codes given below:
60666. A function is given f(t) = sin2t + cos2t. Which of the following is true?
60667. The amplifier network is shown below:
re and z0 is:
60668. Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of?
60669. Poynting vector is associated with
60670. A random process x(t) is defined by x(t) = 2 cos (2p t + Y) where Y is a discrete random variable with
P(Y = 0) = and
Then Rxx (0, 1) =
60671. Consider points P and Q in the x-y plane, with P = (1, 0) and Q = (0, 1). The line integral 2 (xdx + ydy) along the semicircle with the line segment PQ as its diameter
60672. What are the counting stages (Q1, Q2) for the counter shown in the figure below?
60673. Consider the transmission line of length 37.5 cm, which is terminated into zero resistance. This line is being exited by a source of 1 GHz which has an internal impedance of 50 Ω. What is the input impedance of the line as seen by the source?
60674. The triratnas were stressed by?
60675. Consider the following statements:
For a square waveguide of cross-section 3m x 3m it has been found At 6 GHz dominant mode will propagateAt 4 GHz only dominant modes and evanescentAt 11 GHz all the modes and no higher order mode will propagateAt 7 GHz degenerate modes will propagate Which of the above statements are correct?
60676. The circuit shown depicts :
60677. Which of the transistor models is most preferred for the analysis of a transistor circuit both at mid-band and at high frequencies?
60678. It is very likely in __________ gate family that when one gate is driving number of gates in __________ , a gate having least voltage for saturation may consume large __________ leaving other gates inoperative and this phenomenon is called __________ .
60679. The right to property is?
60680. For a system with transfer function
The bandwidth of the system is (rad/sec)
60681. Consider the following: DistortionGainBias stabilizationSensitivityFrequency response Which of these properties of the power amplifier one should concentrate upon while designing a good power amplifier circuit?
60682. In the silicon BJT circuit shown below, assume that the emitter area of transistor Q1 is half that of transistor Q2.
The value of current I0 is approximately
60683. A silicon wafer has 100 nm of oxide it and is inserted in a furnace at a temperature above 1000°C for further oxidation in dry oxygen. The oxidation rate
60684. When a vector has positive divergence, it indicates that the vector quantity has at that point and if the divergence is negative, it indicates __________ .
60685. A function of one of more variables which conveys information on the nature of physical phenomenon is called
60686. Who carried the Indian Flag in the closing ceremony of Guangzhou Asian Games?
60687. Who has won the first Thoppil Bhasi Award?
60688. Which of the following counters can be used to divide the clock frequency of a microprocessor by 5?
60689. In the given circuit, the switch has been in position 1 for quite a long time. At t = 0 the switch is moved to position 2. At this position what is the time constant?
60690. A divide by 78 counters can be realized by using
60691. The process of extension of a single-crystal surface by growing a film in such a way that the added atoms form a continuation of the single-crystal structure is called
60692. Which of the following are the non-linear application of op-amp? Current-to-voltage converterComparatorPeak detectorLimiter Select the correct answer from the codes given below:
60693. Which of the following Article of the Constitution of India guaratees the right to assemble peaceably and without arms?
60694. Which of the following introduces mode partition noise?
60695. A command to get a file you worked on from the memory where it was stored?
60696. Consider the differential amplifier shown in figure. (Assume β is very high).
Zin (base) =
60697. Assertion (A): The line integral of B about a closed contour, in a region containing steady current, is μ0 times the total net current, following through the contour of integration.Reason (R): The curl of B is equal to μ0 times the current density vector J
60698. It is required to match a 200 Ω load to a 450 Ω transmission line. To reduce the SWR along the line to 1, what must be the characteristic impedance of the quarter-wave transformer used for this purpose, if it is connected directly to the load?
60699. In an n-type silicon crystal at room temperature, which of the following can have a concentration of 4 x 1019 cm-3?
60700. The reflection coefficient on a 500 m long transmission line has a phase angle of - 150°. If the operating wavelength is 150 m, what will be the number of voltage maxima on the line?