List of top Questions asked in Andhra Pradesh Post Graduate Engineering Common Entrance Test

Which of the following schemes suffer(s) from the threshold effect?
The image channel selectivity of super heterodyne receiver depends upon ________.
A phase lag compensation will ________.
Given the unity feedback system with \( G(s) = \frac{K}{s(s+6)} \), the value of \( K \) for damping ratio of 0.75 is ________.
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 _______.
In a LASER, which of the following processes have to be minimized.
How many T states are required for the execution of STA 7000H instruction?
A Schmitt trigger is ________.
Which of the following system is causal?
Which IC is used for the implementation of 1-to-16 DEMUX?
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 \(\beta = 100\)?
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 ________.
An antenna has directivity of 100 and operates at 150 MHz. The maximum effective aperture is
A phase lag-lead network introduces in the output_______.
In AM_______.
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 _______.