Losses in Transformers There are two types of losses occurs in a transformer: Iron loss or Core loss Pi Copper loss or…
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single phase transformer
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Electromechanical Energy Conversion Principles An electromechanical energy conversion device is the device that converts electrical energy into mechanical energy or, mechanical energy…
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Single Phase Transformer The transformer is a static device which converts the magnetic energy into electrical energy. It consists of two or…
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Speed Control of D.C. Motors The relationship given below gives the speed of a D.C. motor The above equation shows that the…
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No-Load and Blocked Rotor Test The efficiency of small motors can be determined by directly loading them and by measuring the input…
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Starting of D.C. Motors A starter is a device that initiates and accelerates the motor. A controller is a device to start,…
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Open Circuit Test and Short Circuit Tests To determine the circuit constant, efficiency and regulation of a transformer, without actually loading the…
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Regulation and efficiency What is voltage Regulation? The term voltage regulation identifies the characteristic of the voltage change in the transformer with…
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Three phase induction motors Three – Phase induction motor is the most common and popular type of a.c motor used for industrial…
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Three Phase Transformers The three-phase transformers are mainly of two types: Single unit three-phase transformer. Three unit three-phase transformer. Figure: Three phase…