List of practice Questions

In a signal \( x(n) \), if ‘n’ is replaced by \( \frac{n}{3} \), then it is called ________.
The Z-transform of \( a^n \cdot u(n-1) \) is ________.
The discrete time Fourier transform of the signal, \( x(n) = 0.5^{(n-1)}u(n-1) \) is ________.
In a negative feedback amplifier \( A = 100 \), \( \beta = 0.04 \) and \( V_s = 50\,\text{mV} \), then feedback will be _______.
A Schmitt trigger is ________.
In a LASER, which of the following processes have to be minimized.
Which IC is used for the implementation of 1-to-16 DEMUX?
How many T states are required for the execution of STA 7000H instruction?
Which of the following system is causal?
Output of a phase splitter is _______________.
Primary advantage of a crystal oscillator is that ________.
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
The current flowing through an unloaded voltage divider is called the ________.
In superposition theorem, voltage source is replaced by ________ and current source by ________.
For a base current of 10 \(\mu\)A, what is the value of collector current in common emitter, if \(\beta = 100\)?
A phase lag-lead network introduces in the output_______.
In AM_______.
An antenna has directivity of 100 and operates at 150 MHz. The maximum effective aperture is
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 _______.
The binary code of $(21.125)_{10}$ is _______.
As per Boolean algebra, (A + B)(A + C) = _______.
The medium which reflects high frequency radio waves back to the earth’s surface is called _______.