How is the process of non-uniform quantization equivalently & combinationally performed?
A. Passage of baseband signal through the compressor B. Application of compressed signal to a unifor…
Electronics-and-Communication
Which conditions justify the mutual orthogonality of two random signals X(t) & Y(t)?
a. RXY , (t1, t2 ) = 0 for every t1 and t2 b. RXY , (t1, t2 ) = 1 for every t1 and t2 c. RXY = 0, (t1…
A signal m(t) = 20cos (2π200t) along with carrier generates an FM signal x(t) = 40cos {2π x 106t + 10 sin (2π 200t)}. What will be the value of approximate bandwidth of the frequency modulation? (Marks : 02)
a. 200 kHz b. 2 kHz c. 4.4 kHz d. None of these ANSWER: 4.4 kHz Explanation: Given data : Frequency Deviat…
Assume that super heterodyne receiver consumes an IF frequency of 350 kHz by high side tuning to a transmitter with a carrier frequency of 1200 kHz . What would be the value of an image frequency ?
a. 1550kHz b. 8400 kHz c. 1900 kHz d. 1000kHz ANSWER: 1900 kHz Explanation: Given data : IF = 350 kHz Carr…
Consider the statements given below:
A. All SSS (Stationary in Strict Sense) processes are also WSS (Stationary in Wide Sense) B. All the…
When can a random process is said to be an ergodic process?
a. Only when time averages are less than the ensemble averages b. Only when time averages are equal …
Which among the following statements is/are precise in accordance to distortionless line?
A. A lossless line is also a distortionless line B. A distortionless line is not necessarily a loss…
Which among the below given statements are correct in accordance to the properties of a conductor?
A. The static electric field intensity at the surface of conductor is directed parallel to the surf…
How can the total charge enclosed by the closed or covered surface be expressed using Gauss's law ?
a. By the line integral of the charge density b. By the surface integral of the charge density c. By …
Which among the below mentioned operators is supposed to be zero so as to justify the scalar field to be harmonic?
a. Gradient b. Curl c. Laplacian d. Divergence ANSWER: Laplacian Explanation: A function is said to be ha…
Which conditions are mandatory to get satisfied for the formation of a sphere ? (Marks : 01)
a. 0 ≤ θ ≤ π , 0 ≤ Ф ≤ 2 π & r = constant b. Ф = change , r = change & θ = constant c. r → ∞…
How is the distance defined between two radical planes of the spheres at angles Ø and (Ø + dØ ) ?
a. r sin θ dФ b. sin θ dФ c. r dФ d. r + sin θ dФ ANSWER: r sin θ dФ Explanation: The locus of points whi…
What is the obligatory sequence that need to be performed or executed in time shifting ,scaling and time reversal operational processes under the category of continuous time signals?
a. Time Shifting, Time Scaling & Time Reversal b. Time Scaling, Time Reversal & Time Shiftin…
Consider the following assertions:
A: x(t) or x[n] is assumed to be an energy signal if and only if 0>E>∞ and P=1 B: x(t) or x[…
Y1 : It is not mandatory for every signal to be even or odd
Y1 : It is not mandatory for every signal to be even or odd Y2 : : Any signal which is neither even…
Which Fourier Dirichlet conditions for transform existence specify the necessity of possessing finite values of the signal at any instant over a finite interval of time (T) ?
a. Single Valued Property b. Finite-discontinuities c. Finite Peaks d. Absolute Integration ANSWER: Sin…
Which among the below specified notations exhibit an odd signal? (Marks : 01)
a. x(-t) = -x(t) & x[-n] = -x[n] b. x(-t) = x(t) & x[-n] = x[n] c. x(-t) = -x(-t) & x[-n…
Any signal that exhibits symmetry on Y-axis is called as _______ (Marks : 01)
a. odd signal b. even signal c. periodic signal d. exponential signal ANSWER: even signal Explanation: A…
Which theorems do not support the similarity of handling dependent and independent current and voltage sources ?
A. Thevenin's & Norton's Theorems B. Superposition & Norton's Theorems C. Maximum…
What is the function of dependent source in the circuit diagram shown below?
a. It delivers 256 W b. It absorbs 256 W c. It delivers 512 W d. It absorbs 512 W ANSWER: It absorbs 51…