List of practice Questions

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 movement of charge carriers due to charge carrier concentration gradient is called ________.
For operating an n-channel JFET in pinch-off region, the condition needed to be satisfied is ________.
The advantage of twin tub process in CMOS fabrication is ________.
Back to back connected Zener diodes are used across the output terminals of a circuit to ________.
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 ________.
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 ________.
A half wave dipole at a frequency of 100 MHz has a length of ________.
Which of the following is the unit for Permeability?
Which of the following is the Laplace equation?
If system has multiple poles on \( j\omega \)-axis, the system is________.
A narrow band FM signal is generated using a phase modulator. The maximum deviation at the output of a phase modulator is about________.
A pre-emphasis circuit provides extra noise-immunity by________.
To save transmitted power, the carrier of an AM signal obtained by sinusoidal modulation to a depth of modulation equal to 1, has been recovered. The percentage saving in power 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 ________.