Gopal Krishna, Author at EngineersTutor

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GATE 2015 COMPUTER SCIENCE & INFORMATION TECH. – CS – C Programming | Q. 21 (Session – 2)
Solved C Recursion Problems: Factorial, Fibonacci, Sum of Digits & More
Sum of First 5 Natural Numbers in C: Understanding Recursion Step by Step
GATE 2015 COMPUTER SCIENCE & INFORMATION TECH. – CS – C Programming | Q. 11 (Session – 3)
GATE 2015 COMPUTER SCIENCE & INFORMATION TECH. – CS – C Programming | Q. 62 (Shift – 1)

Radio Wave Propagation

November 9, 2018November 17, 2018 Gopal Krishna 13171 Views 0 Comments antenna, electromagnetic spectrum, EM spectrum, groundwave, ionospheric propagation, line of sight, radio spectrum, radio wave propagation, RF spectrum, sky wave, space wave, surface wave

EM waves are cobination of Electric and Magnetic waves. Propagation means how radio waves travel from one point to another

Introduction to Probability Theory

Cumulative Distribution Function | CDF | Probability Theory

November 4, 2018November 24, 2018 Gopal Krishna 5193 Views 0 Comments cumulative distribution function, cumulative probabilities, dice problems, probability distribution

A function describing possible values of a random variable X and their associated probabilities is known as probability distribution. Probability

Signals & System Analysis

Convolution of signals | Solved problems

November 4, 2018 Gopal Krishna 12356 Views 0 Comments Convolution of signals, delta function, discrete-time convolution, graphical method of convolution, impulse response, shortcut method to find system output

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Signals & System Analysis

Convolution of discrete-time signals | Signals & Systems

November 4, 2018 Gopal Krishna 8619 Views 0 Comments Convolution of discrete-time signals, convolution sum, finding output of a system, impulse response, LTI system, signals and systems

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Signals & System Analysis

Convolution of continuous signals | Signals & Systems

November 4, 2018November 4, 2018 Gopal Krishna 5603 Views 0 Comments continuous time signals, convolution, Convolution of continuous signals, finding system output, impulse response, linear time invariant system, LTI system

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Signals & System Analysis

Time domain representations for LTI systems

November 3, 2018November 13, 2018 Gopal Krishna 4868 Views 0 Comments continuous time system, convolution, convolution sum, discrete time system, integrator system, linear system, LTI system, time domain representations for LTI systems, time invariant system

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Signals & System Analysis

Stability and Causality of a System | Signals & Systems

November 3, 2018 Gopal Krishna 7392 Views 0 Comments convolution, frequency domain, impulse response, linear time invariant system, LTI system, natural response and forced response of a system, plot of poles and zeros in z-plane, region of convergence, ROC, rules for determining stability and causality, stability and causality of a system, step response, time domain, unilateral z transform

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Signals & System Analysis

Partial Fraction Expansion Method | Inverse Z Transform

November 3, 2018 Gopal Krishna 6178 Views 0 Comments degree of denominator polynomial, degree of numerator polynomial, homework questions, inverse z transform, partial fraction expansion method

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Signals & System Analysis

Inverse z Transform | Power Series Expansion Method

October 30, 2018 Gopal Krishna 16581 Views 0 Comments anti-causal sequence, causal sequence, direct method, inverse z transform, long division method, non-causal sequence, power series expansion, region of convergence, ROC, z-transform

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Introduction to Probability Theory

Probability distributions | Probability Theory

October 29, 2018November 24, 2018 Gopal Krishna 2152 Views 0 Comments CDF, cumulative probability distribution, probability distribution, probability function

A function describing possible values of a random variable X and their associated probabilities is known as probability distribution. Probability

Introduction to Probability Theory

Variance of Random Variable | Probability theory

October 29, 2018November 24, 2018 Gopal Krishna 4134 Views 0 Comments average value, expected value, mean, probability, variance of a random variable

For discrete RV X, the variance is written as Var( X) = E[(X-m)2] where m = Expected value of X

Introduction to Probability Theory

Mean square value of Random Variable

October 29, 2018November 24, 2018 Gopal Krishna 9188 Views 0 Comments average value of random variable, expected value, mean square value of random variable, mean value, probability

To study a random variable, we use different measures like: Expectation, Variance, Standard Deviation and Covariance etc. Homework Favorite

Introduction to Probability Theory

Expectation of Random Variable X

October 28, 2018November 24, 2018 Gopal Krishna 5730 Views 0 Comments average value, expected value of random variable, mean value of random variable, probability, probability theory, standard deviation, variance

To study a random variable, we use different measures like: Expectation, Variance, Standard Deviation and Covariance etc. Expectation of RV:

Signals & System Analysis

z Transform summary and Assignment | Signals & Systems

October 27, 2018November 3, 2018 Gopal Krishna 7395 Views 0 Comments assignment, z transform summary, z-transform

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Signals & System Analysis

Initial value theorem | Z transform

October 27, 2018November 3, 2018 Gopal Krishna 12833 Views 0 Comments initial value therorem, z transform properties, z-transform

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Signals & System Analysis

Z transform properties | Signals & Systems

October 27, 2018November 3, 2018 Gopal Krishna 6679 Views 0 Comments differentiation, linearity, scaling, time shifting, time-folding, time-reversal, z transform properties

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Signals & System Analysis

Z transform solved problems | ROC

October 27, 2018November 4, 2018 Gopal Krishna 5424 Views 0 Comments geometric progression, GP series, region of convergence, ROC, z transform solved problems

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Signals & System Analysis

ROC | Region of Convergence | Z transform

October 27, 2018November 4, 2018 Gopal Krishna 4462 Views 0 Comments properties of ROC, region of convergence, ROC, z-transform

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Signals & System Analysis

Z Transform | Signals & Systems

October 27, 2018November 2, 2018 Gopal Krishna 4526 Views 0 Comments anti-causal sequence, causal sequence, frequency domain, left sided sequence, polar form of complex number, region of convergence, right sided sequence, ROC, time domain, transformation of signals, two-sided z transform, z transform definition, z-transform

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Signals & System Analysis

DTFT | Discrete Time Fourier Transform

October 26, 2018November 3, 2018 Gopal Krishna 4428 Views 0 Comments discrete time fourier transform, DTFT

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