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### On Delay Timer | Off Delay Timer Working Principle

On Delay Timer and off Delay Timer: Generally, timers are used to control the circuit for certain amount of time. Using timers we can delay...

### Electrical Standards For Contactors AC1, AC2, AC3, AC4, DC1, DC2 DC3

Electrical Standards For Contactors AC1, AC2, AC3, AC4, DC1, DC2 DC3 The duty of electrical contractor is categorized by the types of electrical loads used...

### Source of Electrical Energy

Source of Electrical Energy: It the world electrical energy will be taken from two kind of sources. One is conventional sources and another one is...

### What is Crawling of Induction Motor Definition & Simple Explanation

What is Crawling of Induction Motor: As you know fifth harmonic (5*fundamental frequency) has negative sequence current hence it creates negative field and which opposite...

### What is Percentage Impedance & Calculate Percentage Impedance?

What is Percentage Impedance & Calculate Percentage Impedance? "The percentage impedance is nothing but a measure of the volt drops when the transformer in on...

### Harmonic In Electrical | How Electrical Harmonics Occurs in Power system

What is Harmonic in Electrical: Harmonic in electrical is nothing but an integer multiplication of fundamental frequency. Harmonic are an unwanted distorted waveform which frequency...

### Vector Sum Three Phase Current

Vector Sum Three Phase Current: Vector sum is nothing but a calculating total current magnitude as well as phasor. i.e. consider three phase current magnitude...

Electrical license Renewal in Tamilnadu Supervisor Contractor Workmen: After getting electrical contractor license and electrical supervisor license, both are valid only for four years. Each...

### Why capacitor is required for Single phase motor

Why capacitor is required for Single phase motor: Single phase motors are not a self-starting motor, single phase power supply cannot create rotating magnetic field...

Electrical Supervisor License in Tamilnadu: Electrical license is nothing but a government certified authorized person to handle or operate or maintain or repair electrical installation....

### What is Busbar Current Carrying Capacity Calculation 5 Types of Busbar

What is Bus Bar? Bus bar is a metallic strip or conductor shaped in square or rectangle or any…which is used in major electrical panel...

### Basic Concept of DC Generator and Types of DC generator

Basic Concept of DC Generator and Types of DC generator What is generator? Generators are the energy conversion device which is used to convert mechanical energy...

### Difference Between Voltage and EMF

Difference between the voltage and emf: Many of the electrical engineer, student or electrical technician confuse between the voltage and emf. In this we are...

### 7 Simple How to Find Current Transformer (CT) Polarity

7 Simple Ways to Find CT Polarity: Current Transformer is used to sense the primary line current. Generally current transformer is called as CT. CTs...

### Basic Concept of Bucholzz Relay Working Principle

Bucholzz Relay Working Principle: The transformer has lot of protection, but more than 500kVA rating none of the transformer manufactured more than without bucholzz relay....

### What Is Resistance? Resistive of the Resistor & One Ohm Resistance

Definition of Resistance The fundamental properties of a matter or substances which oppose the flow of electron is called electrical resistance. The resistor is a...

### What is Voltage, Basic Concept of Voltage For Student

What is Voltage, Basic Concept of Voltage For Student: Voltage can be defined as the potential difference between the two charges points. Otherwise, electric pressure...

### Why DC Voltage is preferred for Control circuit?

Why DC Voltage is preferred for Control circuit?  Advantage Disadvantage: In industry mostly 110 VDC uses to control all important circuit. Example Protection system, Process...

### Electrical MCQs Gate Preparation Power Generation

Power systems MCQs Gate Preparation Power Transmission Generation-4 76.If the excitation of the synchronous generator fails, it acts as a a) synchronous motor b) synchronous generator c)induction motor d)induction...

### Power systems MCQs Gate Preparation Power Transmission Generation-3

Power systems MCQs Gate Preparation Power Transmission Generation-3: 51.A voltage of 1000 kV is applied to an overhead line with its receiving end open. If...

### Power systems MCQs Gate Preparation Power generations-2

Power systems Objective Type Questions Gate Preparation Power generations-2: 26.The insulation level of 400 kV EHV overhead transmission line us decided on the basis of a)...

### Power systems Objective Type Questions Gate Preparation Power generations-1

Power systems Objective Type Questions Gate Preparation Power generations 1.An industrial consumer has a daily load pattern of 2000kW,0.8 lag for 12 hrs and 1000...

### What is Electric Field, Electric Field Intensity, Electric Field Density

What is Electric Field, Electric Field Intensity, Electric Field Density What is Electric Field Electrical Field E is defined as surrounding a charge particle where it...

### What is Free Electron and Basic Free Electron Concept?

What is Free Electron and Basic Free Electron Concept? An atom which contains three different charged particles and one is proton, electron, and neutron. In...

### What is an electric charge? Coulombs Law of electrical charge

What is an electric charge? Electricity is very important aspects of our lives. It is most commonly used in domestic purpose like our home lights,...

### What is conductor, Insulator, Semiconductor

Basically What is Conductor, Insulator, and semiconductor: Basically, the material is defined according to its number of free electron in the valence band. In our...

### What is Slip ring induction motor Practical explanation and Pictured

What is Slip ring induction motor In this type of induction motor’s, the rotor comes with the separate winding section as similar to Stator of...

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