List of top Electronics and Communication Engineering Questions

The equation for resonant peak of second order system whose transfer function \( \frac{\omega_n^2}{s^2+2\zeta\omega_n s + \omega_n^2} \) is given by (The question asks for the equation *for* the resonant peak \(M_r\), not the resonant frequency \(\omega_r\).)
The IC 8255 is a
The n stage Johnson counter will produce a modulus of
The decoder used in 32 x 8 ROM is
The interrupt vector for each interrupt type in 8086 microprocessor requires___ memory locations
Match the following
i–ivConnection Typea–dFeedback Description
iVoltage shunt aCurrent sampling, voltage mixing
iiVoltage seriesbCurrent sampling, current mixing
iiiCurrent shuntcVoltage sampling, current mixing
ivCurrent seriesdVoltage sampling, voltage mixing
Find the operating frequency of a transistor Hartley oscillator for \(L_1 = 20\mu\text{H}\), \(L_2 = 40\mu\text{H}\) and mutual inductance between coils is \(2\mu\text{H}\) and \(C = 1\mu\text{F}\).
A shunt regulator is a type of
The disadvantage of the integrated circuit technology as compared with discrete components interconnected is
The electric current produced when the charge carrier concentration moves from region of higher concentration to the region of lower concentration is called
For a system to be physically realizable, the degree of numerator polynomial M and the degree of denominator polynomial N should be
The continuous time system structure which uses minimum number of integrators is
In QAM, both ______ of a carrier frequency are varied.
The following multiplexer gives the logic gate of a/an _____
multiplexer gives the logic gate
How many minimum number of flip-flops are required to make a mod-479 counter?
_____ is used for the removal of SiO2 from desired regions such that the desired impurities can be diffused.
The characteristic equation of JK flip-flop is ______
The number of flip-flops used in a decade counter is _____
The primary advantage of using a rectangular waveguide over other transmission line types is
Fundamental principle behind the propagation of light in dielectric waveguides and optical fibers is
What is the radiation pattern of a point source antenna in free space?
The purpose of using a transmission line segment with a length of \( \lambda/4 \) in impedance matching is
Which one of the following field patterns represents a TEM wave traveling in the positive \( z \)-direction?
The curl of a vector field \( F \) is zero throughout a region of space. What does this imply about the behavior of \( F \)?
If an electromagnetic wave travels in the positive \( x \)-direction, and its electric field oscillates in the \( y \)-direction, what is the polarization of the wave?