A synchronous generator is a synchronous machine which converts mechanical power into AC electric power through the process of electromagnetic induction.Synchronous generators are also referred to as alternators or AC generators. The term "alternator" is used since it produces AC power. It is called synchronous generator because it must be ... Read More

A 3-phase induction motor is an electromechanical energy conversion device which converts 3-phase input electrical power into output mechanical power.A 3-phase induction motor consists of a stator and a rotor. The stator carries a 3-phase stator winding while the rotor carries a short-circuited winding called rotor winding. The stator winding ... Read More

An ideal impulse signal is a signal that is zero everywhere but at the origin (t = 0), it is infinitely high. Although, the area of the impulse is finite. The unit impulse signal is the most widely used standard signal used in the analysis of signals and systems.Continuous-Time Unit ... Read More

An electromechanical energy conversion device that converts electrical energy into mechanical energy in the form of rotation of shaft is known as electric motor or simply motor. There are several types of electric motors available such as induction motor, brushed DC motor, brushless DC motor, synchronous motor, etc. Read through ... Read More

ConvolutionConvolution is a mathematical tool for combining two signals to produce a third signal. In other words, the convolution can be defined as a mathematical operation that is used to express the relation between input and output an LTI system.Consider two signals $\mathit{x_{\mathrm{1}}\left( t\right )}$ and $\mathit{x_{\mathrm{2}}\left( t\right )}$. Then, ... Read More

What is Convolution?Convolution is a mathematical tool to combining two signals to form a third signal. Therefore, in signals and systems, the convolution is very important because it relates the input signal and the impulse response of the system to produce the output signal from the system. In other words, ... Read More

Linear SystemA system is said to be linear if it obeys the principle of homogeneity and principle of superposition.Principle of HomogeneityThe principle of homogeneity says that a system which generates an output y(t) for an input x(t) must produce an output ay(t) for an input ax(t).Superposition PrincipleAccording to the principle ... Read More

A signal is said to be periodic signal if it has a definite pattern and repeats itself at a regular interval of time. Whereas, the signal which does not at the regular interval of time is known as an aperiodic signal or non-periodic signal.Continuous Time Periodic SignalA continuous time signal ... Read More

When the armature of a DC generator rotates in magnetic field, an emf is induced in the armature winding, this induced emf is known as generated emf. It is denoted by Eg.Derivation of EMF Equation of DC GeneratorLet$$\mathrm{\varphi = Magnetic\: flux \:per\: pole\: in\: Wb}$$$$\mathrm{𝑍 = Total \:number \:of \:armature\: ... Read More

Construction of Single Phase TransformerA single phase transformer consists of two windings viz. primary winding and secondary winding put on a magnetic core. The magnetic core is made from thin sheets (called laminations) of high graded silicon steel and provides a definite path to the magnetic flux. These laminations reduce the ... Read More