List of top Electronics and Communication Engineering Questions on Electronics asked in Andhra Pradesh Post Graduate Engineering Common Entrance Test

For an LTI system______________.
20dB/decade is equivalent to ________.
For the standard second order system, with two poles lying at 60° , damping ratio is _______.
The advantage of twin tub process in CMOS fabrication is ________.
A 128 kbyte memory is to be realized using memory chips each with 8 address lines and 4 data lines. Number of memory chips required is ________.
A six Flip-Flop Serial-In-Serial-Out shift register connected in twisted ring configuration has ________.
A half wave dipole at a frequency of 100 MHz has a length of ________.
Which of the following is the unit for Permeability?
In a PCM system, if the code word length is increased from 6 to 8 bits, the signal to quantization noise ratio improves by the factor ________.
In a 16-ary PSK, the symbol rate is 10 kbps. The bit rate is ________.
Companding is used in PCM in order to ________.
The value of electric field at a distance of 1 m from an infinite line charge density 1 C/m is ________.
If system has multiple poles on \( j\omega \)-axis, the system is________.
A band-limited signal is sampled at the Nyquist rate. The signal can be recovered by passing the samples through________.
Which of the following schemes suffer(s) from the threshold effect?
The image channel selectivity of super heterodyne receiver depends upon ________.
Given the unity feedback system with \( G(s) = \frac{K}{s(s+6)} \), the value of \( K \) for damping ratio of 0.75 is ________.
A phase lag compensation will ________.
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 ________.
How many T states are required for the execution of STA 7000H instruction?
Which of the following system is causal?
In a negative feedback amplifier \( A = 100 \), \( \beta = 0.04 \) and \( V_s = 50\,\text{mV} \), then feedback will be _______.
A Schmitt trigger is ________.