Phase sequence and Polarity of Three Phase System
Phase sequence is the sequence in which the voltages in a three-phase system reach their peaks. Each phase-shifted by 120 degrees with respect to the other two.
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Single Phase Transformer Formulas
Parameter Symbol / Formula Where Primary EMF Equation of Single Phase Transformer (Ep) f= frequency Np =Number of primary turns = maximum flux Secondary EMF Equation (Es) f= frequency Ns =Number of secondary turns = maximum flux Transformation ratio (K) Ns =Number of secondary turns Np =Number of primary turnsVp =Primary voltageVs =Secondary voltage Turn … Read more
Phasor and Complex Representation of Three Phase Supply
Phasor representation is a way of representing sinusoidal quantities. These include voltages and currents. They are represented as complex
DC Generator Formulas and Equations
Here, we have listed all the important DC Generator Formulas and Equations, DC generator EMF equation, power equation etc.
AC Series Circuit Formulas
For RL and RC Series Circuit: For RL Series Circuit For RC Series Circuit V= rms value of the applied voltageI= rms value of the circuit currentVR= Voltage across resistanceVL= Voltage across inductanceVC= Voltage across capacitanceR= ResistanceXL= Inductive ReactanceXC= Capacitive Reactance For RL: For RC : Z= ImpedanceR= ResistanceXL= Inductive ReactanceXC= Capacitive Reactance For RL: … Read more
Basic AC Circuit Formulas
Basics: v = value of alternating voltage at time t (called instantaneous value)Vm = maximum value of alternating voltage= Angular velocity of the coil i =value of alternating current at time t (called instantaneous value)Im = maximum value of alternating current = Angular velocity of the coil T = Time period in secondf = frequency … Read more
Basic Electrical Formulas
This table shows basic electrical formulas used to find voltage, current, resistance, power, and energy, helping analyse and design electrical circuits.
Different Types of Lightning Arresters
Types of lightning arresters : 1. Rod gap arrester2. Horn gap arrester 3. Multigap arrester4. Expulsion type lightning arrester 5. Valve type lightning arrester Rod Gap Arrester:- A Rod Gap Arrester is a simple type of diverter used in electrical systems to protect against high voltage surges, particularly those caused by lightning strikes. Here are … Read more
Characteristics of High Voltage for Power Transmission Lines
Using high voltage for transmitting electricity has many important advantages. Characteristics of high voltage in power transmission lines include