Different Types of Rotors and their Characteristics

types of rotor

As a general rule, construction of an induction motor consists essentially of two main parts : a) a stator and b) a rotor In rotor construction, there are two types of motors are coming.. Squirrel cage rotor motor Phase wound or wound rotor motor   Let’s know something about the …

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Types Of Cement Their Uses And Purposes With Examples

types of cement

Different types of cement are manufactured to meet different physical and chemical requirements for the specific purposes.   The different types of cement are as follows: Ordinary Portland Cement It is used for all general purposes and widely used for all ordinary concrete work, mortar, plaster etc. Portland Pozzolana Cement It is also …

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How do calculate cement and sand quantity in 1:6 mortar

sand quantity

The calculation of cement & sand in 1:6 is calculated in the following manner. For a Sample calculation, I will assume a 12mm thick plaster and a mix ratio of 1:6. Step-1: Calculate the volume of mortar required. I am calculating it for 1 Sqm and 12 mm thickness (Assumption). So, …

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Power Transformer vs Distribution Transformer | Electrical Darwaza

power vs distribution transformer

Power transformers are used for transmission & receiving purpose, whereas distribution transformers are used only for distribution purpose. Power transformer voltage ratio varies b/w 756 kV to 11kV. Whereas the distribution transformer voltage ratio varies b/w 33kV to 430V. Power transformers usually have higher MVA rating compare to distribution transformers. …

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Types of DC Motors | Classification of DC Motors

types of dc motor

DC motors are classified into shunt motor Series motor Compound motor The compound motor is again classified as Long shunt motor — in long shunt, the shunt field is parallel with both the armature winding and series winding. Short shunt motor- in short shunt, the shunt field is only parallel …

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Difference Between Amplitude and Frequency Modulation

AM vs FM

  The figure shown explains the difference between AM & FM. A high-frequency carrier is used in both the modulation schemes. In AM, the amplitude of the carrier signal is modulated according to the varying amplitudes of the input signal (Black color), maintaining constant frequency for the resultant AM signal …

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Difference Between Single Phase and Three Phase


Single phase and three phase are two forms of alternating current which involve a sinusoidally varying voltage or current. The single phase is used in a place where less power is required and for running the small loads. The three phases are used in large industries, factories and in the …

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Types of Current Transformer | Electrical Engineering Darwaza

Current Transformer

A current transformer is a device which produces an alternating current in its secondary which is proportional to the alternating current in its primary. A current transformer (C.T.) is used where the current is too high to measure directly, or the voltage in the primary circuit is too high, so …

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Different Transformer Testing | Electrical Engineering Darwaza

transformer testing

A power transformer is usually employed for the purpose of converting power, from one voltage to another. If it is used for converting power from a high voltage to a low voltage, it is called a step-down transformer. The conversion efficiency of a power transformer is extremely high and almost …

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Why does electrical engineering suck? | Electrical Engineering

electrical engineering sucks

No electrical engineer sucks if he definitely has ultimate interest or passion towards it. There are many students who don’t see them fit for electrical engineering. It’s because of lack of knowledge in the concerned department or lack of interest. Engineering is not just the study for 4 years. it’s …

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Lightning Arresters Types | Electrical Darwaza

Types of Lightning Arresters

The lightning arrester protects the electrical equipment from lightning. It is placed very near to the equipment and when the lightning occurs the arrester diverts the high voltage wave of lightning to the ground. The selection of arrester depends on the various factors like voltage, current, reliability, etc. The lightning …

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Types of Insulators | Electrical Engineering Facts


There are main three categories of insulator that is used as an overhead insulator: Pin Insulator Suspension Insulator Strain Insulator Pin Insulator Pin Insulator is one the youngest overhead insulator, that has a capacity up to 33 KV system. It has one part, two parts, and three parts type, which totally depends …

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Difference Between Pump and Motor | Electrical Engineering

motor vs pump

The motor is an electromechanical device, which consists of rotating conductors and magnetic field to transform electrical energy into mechanical torque. Whereas pump is a hydro-mechanical device that converts mechanical torque into hydraulic/pressure energy. Motoring action ( electric one ) obtained based on Faraday’s law of electromagnetic induction and motor …

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Different Types Of Transformer | Electrical Darwaza

transformer types

A transformer is a device working on mutual inductance principle to convert electrical energy from one voltage/ current level to another. There are different types of transformers used for different purposes. (1) POWER TRANSFORMER Laminated core Transformer Toroidal Transformer Auto transformer Variable auto transformer Induction regulator Transformer(high voltage transformer) Polyphase transformer …

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Difference between a Contactor and a Relay | Electrical Darwaza

contactor vs relay

A contractor is an electromagnetic device which is used to make or break of an electrical circuit. there is two type of contractor. power contactor. auxiliary contactor. Power contactor is used in power circuit like switch on/off of a motor capacitor. while auxiliary contactor is used to switch on or off of a control circuit. a power contactor have 3 main contacts while an auxiliary contactor has many contacts like 1no+1nc 2no+2nc ect..power contactor is generally used where we required to make and break a large current carrying circuit. The Relay …

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Difference between ELCB and MCB | Electrical Engineering Fact


There are so many differences between these two by feature and application, however, few of them are as below: 1- MCB(Miniature Circuit Breaker) is for basic protection device to limit the current and fault in a circuit whereas ELCB(Earth Leakage Circuit Breaker) is advanced one which responds only when the …

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Difference Between Stator and Rotor | Electrical Engineering Fact


The stator is an unmoving component of an electrical machine that’s going around the rotor. It’s derived from the word ‘’stationary’’ as the ‘’stator’’ implies. It contains the windings and provides mechanical support and protection for the motor.                             …

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Difference between Foundation and Footing | Civil Engineering Facts

foundation and footing

Foundations are broadly classified as : Shallow Foundations Deep Foundations According to Karl von Terzaghi, a foundation is shallow if its depth is equal to or less than its width. Foundations constructed by open excavation are also called shallow foundations. The term footing is used in conjunction with shallow foundations commonly. A footing is a foundation unit constructed …

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How Inverters Work – Working principle

How inverters work. In this video, we take a look at how an inverter works to convert direct current (DC) into Alternating current (AC). Inverters are used increasingly throughout the industry as well as building services for HVAC systems to achieve precise control of AC induction motors connected to AHU …

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OOPS Interview Questions

Question #1 : Difference between class variables and Instance Variables? https://softwareengineering.stackexchange.com/questions/293478/what-are-the-differences-between-class-variables-and-instance-variables-in-java   They both are member variables, meaning that both are associated with a class. Now of course, there are differences between the two: Instance variables: These variables belong to the instance of a class, thus an object. And every instance of that …

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How to dodge 20% of Fiverr commission?

We all love Fiverr because it’s a great place to kickstart your career of freelancing. You are happy , your clients are happy working with you. Things go well if you are working for projects under  $500 but  as soon you had to cross $500 then you become frustrated because …

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38 ARKit iOS demo projects that you must check for getting started

iOS 11 introduces ARKit, a new framework that allows you to easily create unparalleled augmented reality experiences for iPhone and iPad. By blending digital objects and information with the environment around you, ARKit takes apps beyond the screen, freeing them to interact with the real world in entirely new ways. By …

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How to Show Post Title Horizontal in WordPress Dashboard

Most Frequent Ask Question Why are my post titles showing vertically on the page that lists all posts? Why my  post title showing  vertical in dashboard? Text displaying vertically not horizontally on WordPress Posts dashboard, what can i do?   If your post title is showing vertical and your facing …

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