You Are On Multi Choice Question Bank SET 1465
73251. In the interconnection of ideal sources shown in the figure, it is known that the 60V source is absorbing powerWhich of the following can be the value of the current source?
73256. For the waveform shown below, the slew rate and full power bandwidth with respect to op-amp will be respectively
73257. In the derivation of expression for peak percent overshoot, , Which one the following conditions is NOT required?
73258. The impulse response h(t) of a linear invariant continuous time system is given by h(t) = exp (- 2t) u(t), where u(t) denotes the unit step function. The output of this system to the sinusoidal input x(t) = 2cos(2t) for all time t, is
73259. In the following circuit , the comparator output in log: "I" if V1 > V2 and is logic "0" otherwise. The D/A conversion is done as per the relations VDAC = 2n-2 Volts, where b3 (MSB), b2, b1 and b0 (LSB) are the counter outputs. The counter starts from the clear stateThe magnitude of the error between VDAC and Vin at steady state in volts is
73260. Consider the resonant circuit as shown belowThe circuit is scaled modified so that Zmax 104 and ωo = 108 Radians. Find the required element values
73263. In a JK flip-flop, J is connected to Q and K is connected to Q outputs. The JK FF converts into a
73264. A point charge of 6 μC is located at the origin, uniform line charge density of 180 nC/m of 8 m length lies along the x axis and a uniform sheet of charge equal to 25 nC/m2 of area p x 42 lies in the z = 0 plane. Calculate total electric flux leaving the surface of sphere of 4 m radius centered at origin.
73268. Input and output impedance with feedback for voltage series feedback having A = -200, R1 = 10 kΩ, R0 = 50 kΩ and feedback factor β = -0.2 will be
73270. An FM transmitter delivers 80W to a load of 30 W when no modulation is present. The carrier is now frequency modulated by a single sinusoidal signal and the peak frequency deviation is so adjusted to make the amplitude of the second sideband is zero in the given output.J0(0, 0) = 1, J0(2, 4) = 0, J0(3.8) = - 0.4, J0(5.1)= - 0.1J1(2, 4) = 0.52, J1((3.8) = 0, J1(5.1) = - 0.33, J2(2.4) = 0.1J2(3.8)= 0.41, J2(5.1) = 0 The power in all the remaining sidebands is :
73271. In the circuit shown, all the transmission line sections are lossless. The Voltage Standing Wave Ration (VSWR) on the 60W line is
73272. It is desired to design a phase shift oscillator using an FET having a gm = 5000 μSiemen, rd = 40 kΩ and feedback circuit value of R = 10 K. Then value of C for oscillator operation at 1 kHz and that of RD for A = 40 to ensure oscillator action are
73274. Modem warfare has changed from large scale clashes of armies to suppression of civilian populations. Chemical agents that do their work silently appear to be suited to such warfare; and regretfully, there exist, people in military establishments who think that chemical agents are useful tools for their cause, which of the following statements best sums up the meaning of the above passage:
73275. A power of 100 W is radiated from an isotropic radiator. The power radiated peer unit solid angle and the power density at a distance of 10 km from the antenna is respectively
73276. For signal flow graph shown in following figure determine the ratio X5|X1. Use Mason's gain formula for signal flow graph.
73277. Consider following statements : Maximum energy of electrons liberated photoelectrically is independent of light intensity Maximum energy of electrons liberated photoelectrically varies nonlinearly with frequency of incident light.
73283. The capacitors C1, C3, C4 and C5 have a capacitance of 4 μF each and the capacitor C2 has a capacitance of 10 μF. The effective capacitance (in μF) between the points X and Y will be
73285. The equivalent T circuit of this coupled network is shown in figure. Find the values of ZA, ZB and ZC.
73288. The following circuit is implementation of: sum of full addercarry of half adder difference of full subtractor
73289. The region between a pin of parallel perfectly conducting planes of infinite extent is y and z directions is partially filled with a dielectric as shown below.A 30 GHz TE10 wave is incident on the air-dielectric interface. The VSWR at the interface is
73290. Consider the following amplifier with negative feedbackIf the closed loop gain of above amplifier is + 100, the value of β will be
73292. The ratio of condition current density to displacement current density for a good conductor and a good dielectric is respectively __________ .
73295. In the circuit shown below current through the resistor is shown. Voltage across 4 Ω resistor is:
73296. If the function A, B are A = R + P Q + R S B = PQRS + PQRS + PQRS Which of the following is true?
73297. In 8085 microprocessor system, what will be the total delay provided by the following loop.
MVI A, 11H
LXI B, 12FFH
Delay: DCX B
XTHL
NOP
XRA B
JNZ Delaywhere system clock is operating at 3 MHz.
73298. A speech signal, band limited to 4kHz and peak voltage varying between + 5V and - 5V is sampled at the Nyquist rate. Each sample is quantized and represented by 8 bits. The number of quantization levels required to reduce the quantization noise by a factor of 4 would be
73299. The maximum effective aperture of an antenna which is operating at wavelength of 2 m and has a directivity of 100 is __________ .
73300. A speech signal, band limited to 4kHz and peak voltage varying between + 5V and - 5V is sampled at the Nyquist rate. Each sample is quantized and represented by 8 bits. Assuming the signal to be uniformly distributed between its peak values, the signal to noise ratio at the quantizer output is
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