ISRO Scientist/Engineer CS Solved Papers
Prepare for ISRO ICRB examinations with verified solutions covering Algorithms, Theory of Computation, Compiler Design, Computer Architecture, OS, Discrete Mathematics, and Computer Networks.
All ISRO CS PYQs / All CS Subjects / All Topics
Marking scheme: +3.00 positive, -0.75 negative (ICRB Standard).
The state transition diagram for the diagram given is:
Given a single 3:8 active high output decoder. What is the minimum number of 3-input OR gates required to implement a one bit Full adder?
In the given figure, find the value of $(X_0, X_1, X_2, X_3, X_4, X_5, X_6, X_7)$ to realise the function $F = A + \overline{B}$
Which of the following is True for signal travelling through a Wave-Guide?
For matched junction S parameters, which of the following is correct?
Which of the following transmission modes is supported by Stripline?
For a directional coupler, if $P_i = \text{Incident Power}$, $P_o = \text{Output power}$, $P_f = \text{Forward coupled power}$ and $P_r = \text{Reverse coupled power}$; then, Directivity of directional coupler is
Magic Tee can produce
The cut off frequency of TEM wave is
In transistor oscillators, FET and BJT are used. Instability is achieved by:
In a three stage cascade amplifier, each stage has a gain of 10 dB and noise figure of 10 dB. The overall noise figure is
Operating Frequency limitation for Bipolar semi-conductor device is due to a
Which of the following offers highest speed of operation?
Gunn Diode operated at a high frequency is a
Compared to Silicon, GaAs Semi-conductors offer advantage of
Calculate the approximate power added efficiency of following power amplifier:
- DC Voltage: 8 volts
- DC Current: 5 Amp
- AC Input signal: 0 dBm
- O/P power: 30 dBm
Which of following class of amplifiers provides highest efficiency?
Compared to Linear power supplies SMPS offers
What are the different circuit topologies used for DC/DC converter designs?
What is the average probability of error with two symbols 0 and 1 with source probability 0.2, 0.8 respectively transmitted over a binary asymmetric channel as given below:
The minimum distance required for a linear block code to achieve a guaranteed correction of up to 5 errors is
The Lower Threshold Point (LTP) voltage of the Schmitt trigger with an ideal op-amp shown in Figure is
An ideal comparator is fed with a sine wave of 4Vpp (peak-to-peak) with zero DC component as shown in Figure. The reference voltage of the comparator is 1 V. What is the duty cycle of the output $V_{\text{out}}$?
Which of the following represents the correct output $V_o$ of circuit shown in Figure? Assume $RC = 1$.
An 8-bit Digital-to-Analog converter (DAC) using two identical 4-bit DACs with equal reference voltage is shown in Figure. If $b_0$ represents LSB, $b_7$ MSB and the op-amp is ideal, to obtain correct analog values corresponding to an 8-bit DAC at the output $V_o$, what should be the value of resistor R?
