List of top Electronics and Communication Engineering Questions

Primary advantage of a crystal oscillator is that ________.
Output of a phase splitter is _______________.
For a base current of 10 \(\mu\)A, what is the value of collector current in common emitter, if \(\beta = 100\)?
In superposition theorem, voltage source is replaced by ________ and current source by ________.
The current flowing through an unloaded voltage divider is called the ________.
A voltage source of 300 V has internal resistance of 4\(\Omega\) and supplies a load having the same resistance. The power absorbed by the load is
An antenna has directivity of 100 and operates at 150 MHz. The maximum effective aperture is
In AM_______.
A phase lag-lead network introduces in the output_______.
If carrier and modulating frequency are 100 kHz and 5 kHz respectively, the bandwidth of AM transmission will be _______.
Determine the Laplace transform of \(x(t) = (t^2 - 2t)u(t - 1)\)
The maximum power efficiency of an AM modulator is _______.
In a simple RC high-pass filter, the desired roll-off frequency is 15 Hz and \(C = 10\ \mu F\). The value of \(R\) would be _______.
Changes in temperature will affect the level of _______.
The envelope detector is a/an _______.
The binary code of $(21.125)_{10}$ is _______.
As per Boolean algebra, (A + B)(A + C) = _______.
For the SOP expression $A\overline{B}C + \overline{A}BC + AB\overline{C}$, how many 1s are in the truth table’s output column?
The medium which reflects high frequency radio waves back to the earth’s surface is called _______.
An FM signal having a modulation Index of $M$ is passed through a frequency tripler. The FM signal at the output of tripler will have a modulation index of _______.
What is the size of the address bus in a 16-bit microprocessor?
The output voltage of a transistor amplifier is 12 V when the input is 2 V. What is the voltage gain of the amplifier?
What is the bandwidth of a signal if the highest frequency is 5 kHz and the lowest frequency is 2 kHz?
Which of the following represents the correct relationship between the speed of light \( c \), frequency \( \nu \), and wavelength \( \lambda \)?
Three identical amplifiers with each one having a voltage gain of 50, input resistance of 1 kΩ and output resistance of 250 Ω are cascaded. The open circuit voltage gain of the combined amplifier is