Tag: Electrical
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 the major electrical...
On Delay Timer | Off Delay Timer Working Principle
On Delay Timer and off Delay Timer:
Generally, timers are used to control the circuit for a certain amount of time. Using timers we can...
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 the electrical contractors is categorized by the types of electrical loads...
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 & How to Avoid it?
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...
What is Harmonics, Creation, Elimination 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 & Wireman
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 Supervisor License in Tamilnadu:
Electrical license is nothing but a government certified authorized person to handle or operate or maintain or repair electrical installation.
The...
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...
