Open circuit test of transformer

Open circuit test of Transformer

There are four tests in the transformer. Polarity test Open circuit test Short circuit test Sumpner’s test or back to back test In this article, we will explain the open…

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Ideal Transformer: properties and phasor diagram

An ideal transformer is an imaginary transformer. The proprieties of the practical transformers are different than the ideal transformers. The operation of the practical transformer is close to the ideal…

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Transformer Losses

Transformer Losses

Among all electrical machines, the transformer is the most efficient electrical machine. As shown in  working of the transformer, it is a static device. Hence, friction and windage losses are…

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torque slip characteristics of induction motor

Torque Slip Characteristics of Induction Motor

Torque slip and Torque speed curve obtain from the torque equation. (1)   The slip() defines as the ratio of the difference of synchronous speed () and rotor speed ()…

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Linear Induction Motor (LIM)

The linear induction motors use for traction work. It works on electromagnetic induction principle. Similar to the rotational induction motor, it has two windings; primary winding and a secondary winding….

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Electrical Machine MCQ #2 DC Machine (2)

Electrical Machine MCQ – DC Machine #2

Electrical Machine MCQ DC Machine #2 16 to 30 Previous

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Double cage Induction Motor

We have seen the construction of the induction motor. The starting torque of the motor depends on rotor resistance. In the case of three-phase squirrel cage induction motor, we cannot…

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Similarities and differences between Induction motor and Transformer

Similarities and differences between Induction motor and Transformer

There are many similarities and differences between the induction motor and transformer. Similarities between Induction motor and Transformer The Induction motor is similar as a Transformer with a rotating short-circuited secondary. The stator…

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Transformer: definition and working principle

Transformer: definition and working principle

A transformer is a static device and used to transfer the alternating power from one electric circuit to another electric circuit. The process of transferring power is done without any…

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Equivalent Circuit of Induction Motor

Equivalent Circuit of Induction Motor

The operation of an Induction motor is similar to the operation of the transformer. The equivalent circuit of the induction motor is similar to the equivalent circuit of the transformer….

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