84₁₆ - 2A₁₆ is equal to

When number of quantization levels are two; then the average transmission power in NRZ polar signaling is __________ that of NRZ unipolar signaling

For a message signal m(t) = cos (2pf_mt) and the carrier frequency f_c, which of the following represents a single side band (SSB) signal?

Six sets of electromagnetic waves are given below :
-KHz
-KHz
3 -MHz
-KHz
-MHz
>MHz
There are designated in the following order

If R_T, R_h represent condition for reciprocity in case of transmission parameter and hybrid parameter respectively and similarly S_T, S_h represent condition for symmetry in case of transmission parameter and hybrid parameter respectively then match the following :
(R_T (a) A = D
(R_h (b) h₁₂ = h₂₁
(S_T (c) AD - BC = 1
(S_h (d) h₁₂ = - h₂₁
(e) B = c
(f) Δh = 1

Consider the following statements:
For a master-slave J-K flip-flop,

1. the toggle frequency is the maximum clock frequency at which the flip-flop will toggle reliably.
2. the data input must precede the clock triggering edge transition time by time minimum time.
3. the data input must remain fixed for a given time after, the clock triggering edge transition time for reliable operation.
4. propagation delay time is equal to the rise time and fall time of the data.

A series R-C circuit with R = 3 Ω and X_C = 4 Ω atHz is supplied with a voltage V =+ 141.4 sint. What is the RMS value of the current flowing through the circuit?

Gain of the circuit shown below is:

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.

A single mode fibre not suffer from which type of dispersion?

Which one of the following is not LED material?

A standard waveguide W Rhas inside wall dimensions of a = 2.cm and b = 1.cm. What is the cut-off wavelength for TE₀₁ mode?

Which of the following meters cannot measure a.c. quantities?

Calculate the electrostatic force of repulsion between two mica particles at a distance of 10^-13 m from each other. Charge on a particle is 3.2 x 10^-19 C. (relative permittivity for mica is 5)

A ring counter with 5 flip-flops will have __________ states.

A negative-feedback closed-loop system is supplied to an input 5 V. The system has a forward gain of 1 and a feedback gain of 1 and a feedback gain ofWhat is the output voltage?

There are four different algorithms AAA3 and A4 to solve, a given problem with the complexity order log(n), log(log(n)), n log and n/log(n) respectively. Which is the best algorithm?

The amplitude of a random signal uniformly distributed between - 5 V and 5 V
If the signal to quantization noise ratio required in uniformly quantizing the signal is 4.5dB, the step size of the quantization is approximately

Consider the following statements:
The conductivity of a metal has negative temperature coefficient since:

1. The electron concentration increases with temperature.
2. The electron mobility decreases with temperature.
3. The electron-lattice scattering rate increases with temperature.

AtGHz , the gain of a parabolic dish antenna of 1 meter diameter andefficiency is

Which of the following statements is/are true for a good conductor of electricity?

1. Its conductivity decreases with increasing temperature.
2. Number of free electrons is around 10²⁸ m^-3.
3. Its conductivity decreases with addition of impurities.
4. It is a good conductor of heat also.

Consider the following statements:

1. A flip-flop is used to store 1-bit of information.
2. Race-around condition occurs in a J-K flip-flop when both the inputs are 1.
3. Master-slave configuration is used in flip-flops to store 2-bits of information
4. A transparent latch consists of a D-type flip-flop.

An electromechanical closed loop control system has the following characteristics equation :s³ + 6Ks² + (K + 2)s = 8
where K is the forward gain of the system. The condition for closed loop stability is

Which of the following addressing modes is used in the instruction PUSH B?

Assertion (A): It is not desirable to drive a transistor into hard saturation in high speed switching circuits.

Reason (R): It may not be possible to bring it back to cutoff state, if it is driven into hard saturation.

In Quine-Mclusky method of Boolean function reduction; __________ , are treated as __________ and therefore discrepancies may occur in the final solution, therefore this method is not applicable to the functions with __________ .

In TV transmission the modulation schemes for video and audio are respectively

Assertion (A): A rectifier with inductor filter is more efficient for high load current.

Reason (R): In rectifier with inductor filter we can use a larger choke to reduce ripple, larger choke will have higher dc resistance which will result in lower dc output voltage for higher load current.

The eigen values of the following matrix are

Hysteresis loss in a transformer working atV and at a frequency ofHz isW. When the transformer is operated atV and at a frequency ofHz, what is the hysteresis loss?

How can the bandwidth of a control system be increased?

A standard waveguide W Rhas inside wall dimensions of a = 2.cm and b = 1.cm. What is the cut-off wavelength for TE₀₁ mode?

A balanced modulator is used in the generation of which of the following?

What is the major cause of creeping in an energy-meter?

What is the propagation constant for air filled wave guide with dimensions a = 1.and b = 0.at 4.GHz. The wave impedance is

Consider a silicon p-n junction at room temperature having the following parameters:
Doping on the n-side = 1 x 10¹⁷ cm^-3
Depletion width on the n-side = 0.1 μm
Depletion width on the p-side = 1.0 μm
Intrinsic carrier concentration = 1.4 x 10¹⁴F. cm^-1.
Thermal voltage = 26mV
Permittivity of free space = 8.x 10^-14F. cm^-1.
Dielectric constant of silicon =The peak electric field in the device is

For an N-point FFT algorithm with N = 2^m which one of the following statements is TRUE?

The Table given below is the mark obtained by 2 students in 8 different subjects.

The regression line of y on x is:

A balanced modulator is used in the generation of which of the following?

What is the major cause of creeping in an energy-meter?

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?

What is the address space ofCPU?

What is the period of the sinusoidal signal x(n) = 5 cos [0.2 pn]?

A signal x₁(t) and x₂(t) constitute the real and imaginary parts respectively of a complex valued signal x(t). What form of waveform does x(t) possess?

Which among the following waveforms can be reconstructed from its samples without distortion?

The ratio of the diffusion coefficient in a semiconductor has the units

In Quine-Mclusky method of Boolean function reduction; __________ , are treated as __________ and therefore discrepancies may occur in the final solution, therefore this method is not applicable to the functions with __________ .

In TV transmission the modulation schemes for video and audio are respectively

A balanced modulator is used in the generation of which of the following?

What is the address space ofCPU?