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You Are On Multi Choice Question Bank SET 1468

73401. The transfer function of a system is . The characteristic equation of the system is :

73402. Given f = GEF + KHIJ + LMON + TUV WXYZ and E + F + G = LMN V + W = U . Z . Y . X . T NAND B (UVW ⊕ WVU ) = KJ(XY ⊕ XY )Then f is equivalent to

73403. If V = 4 in the figure, the value of IS is given by,

73404. Choose correct option for a stable system : Roots of the characteristic equation of the system are real and negativeArea within the impulse response is finite

73405. The number of distinct Boolean expressions of 3 variables is

73406. If X = 1 in the logic equation [X + Z { Y + (Z + X Y )}] { X + Z (X + Y)} = 1, then

73407. (22)4 + (101)3 - (20)5 = (x)4 + (4)x+1 where x > 4. The value of x is

73408. Consider a system with the transfer function . Its damping ratio will be 0.5 when the value of k is :

73409. For the system with given characteristic equation s5 + 4s4 + 8s3 + 8s2 + 7s + 4 = 0 The number of roots on left hand side, right hand side and imaginary axis are respectively.

73410. A series RLC circuit has a resonance frequency of 1 kHz and a quality factor Q = 100. If each of R, L and C is doubled from its original value, the new Q of the circuit is

73411. The depth of penetration at 4 MHz is 10 cm, then at 2.5 MHz it is

73412. The expression given is F(A, B , C, D, E, F, G, H) = (33, 48, 102, 158, 222, 229, 233, 243, 255); then the __________ and __________ minterms are grouped together into dual and variable __________ is reduced using the dual

73413. A source produces 4 symbols with probabilities , , , For this source, a practical coding scheme has an average codeword length of 2 bits/symbol. The efficiency of the code is

73414. A generator of 50 Ω internal impedance and operating at 1 GHz feeds a 75 Ω load via a coaxial line of characteristic impedance 50 Ω. The VSWR on the feed line is

73415. A second order system has the transfer function . With r(t) as the unit step function, the response c(t) of the system is represented by

73416. In the circuit, the value of the voltage source E

73417. Skin depth depends on

73418. The following Variable Entered Map (VEM) represents which of the following function:

73419. Hall coefficient RH is directly proportional to the charge densityRH depends upon type of the semiconductor material (n - type or p - type)Hall co-efficient RH is directly proportional to hall voltage VH From the above statements which are the false statements?

73420. The equivalent form of the logical expression (A BC + A B C + ABC + ABC + AB C ) is:

73421. In a series operated thyristor configuration, each thyristor should support 100 V. However, the three thyristors only support voltage of 100 V, 90 V and 85 V respectively. Hence, the string efficiency in the case is :

73422. A uniform plane wave in the free space is normally incident on an infinitely thick dielectric slab (dielectric constant εr = 9). The magnitude of the reflection coefficient is

73423. 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. If the bits 0 and 1 are transmitted using bipolar pulses, the minimum bandwidth required for distortion free transmission is

73424. The effective length of an 1/2 antenna (Given Rr = 73 Ω and (Ae)max = 0.34λ2 and η = 120p ) is __________ .

73425. Find Z11,

73426. Consider a Binary Symmetric Channel (BSC) with probability of error being p. To transmit a bit, say 1, we transmit a sequence of three 1 s. The receiver will interpret the received sequence to represent 1 if at least two bits are 1. The probability that the transmitted bit will be received in error is

73427. Consider the sequence x(n) whose fourier transform X(ejω) is depicted for - p ≤ ω ≤ p as shown in figure x(n) is periodicRealEvenFinite energy

73428. In the given figure.The damped frequency is __________ .

73429. For a medium σ = 2.1 x 10-4 mho/m and ε = 80 e0 at a frequency of 5 GHz its loss tangent is

73430. For the output F to be 1 in the logic circuit shown, the input combination should be

73431. The ROC of Z-transform of the discrete time sequence x(n) is

73432. The function shown in figure, can represent a probability density function for A __________ .

73433. The circuit given below: If R1 = R2 = 20 kΩ and C1 = 0.2 μF and C2 = 0.005 μF. Then which of the given statements given below is true?

73434. The Nyquist sampling rate for the signal s(t) = is given by

73435. The question below consists of a pair of related words followed by four pairs of words. Select the pair that best expresses the relation in the original pair.Unemployed: Worker

73436. First observation taken on turning point is

73437. For a binary symmetric channel, the error probability Pc(0) = Pc(1) = and errors are statistically independent. The channel capacity for a signalling speed 2 bits/second.

73438. Figure below shows D type Flip-Flops connected as shift register, then outputs QD, QC, QB, QA are given by:

73439. To realize following function 'f', How many minimum number of 2 input NAND gates are required?

73440. For a random variable x following the probability density function, p(x), shown in figure, the mean and the variance are respectively,

73441. VR at t < T, t = ∞

73442. For a lossless transmission line, the propagation constant is given as γ = __________ .

73443. If each stage has a gain of 10 dB and noise figure of 10 dB, then the overall noise figure of a two stage cascade amplifier will be

73444. A rectangular waveguide of internal dimensions (a = 4 cm and b = 3) is to be operated in TE11 mode. The minimum operating frequency is

73445. Using 4-bit numbers (n = 4) if k = 00112, how is k expressed in 2's complement?

73446. A lossless 50 Ω transmission line is terminated 30 + j25 Ω, then voltage reflection coefficient and current reflection coefficient are

73447. Find value of i

73448. The circuit shown in the figure has 4 boxes each described by inputs P, Q, R and outputs Y, Z withY = P ⊕ Q ⊕ R, Z = RQ + P R + Q P The circuit is a

73449. Find the electric charge required on the earth and moon to balance their gravitational attraction if the charge on the earth is 12.5 times that on the moon.Mass of moon = 6.7 x 1022 KgMass of earth = 6 x 1024 KgDistance between moon and earth = 380 KmUniversal gravitational constant = 6.7 x 10-11 Nm2/Kg2

73450. When x(n) is real then the Fourier series coefficients are correlated as __________ .

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