ac and dc motor advandtage,disadvantage,aplication

2 Answers   Apollo,

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What are pre paid energy meters ? How it works ?

1 Answers   Siemens,

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An alternator is started without excitation then how much voltage it will produced at strating at full rpm??

4 Answers  

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During the testing of Electrical Equipment the test cables should not touch the equipments. For that testing engineers use to cotton rope to hang the cable from measuring Equipment to testing equipment terminal. Please explain the technical reason for this practice.

1 Answers  

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Why we are testing a tan delta test in transformer? which purpose conduting that test? and time priode test?

1 Answers  

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why is the number of turns different in current and potential coils of wattmeter..?

1 Answers  

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why DC source is used to idetify the polarity of CT/PT?

1 Answers  

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How to Calculate the Fault Level of Electrical Installation

0 Answers  

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current transformer balance the power level on both sides. e.g in case of step up, at secondary side voltage rise but current decrease and vice versa in case of step down transformer. but how this power level remains same in case of current transformer and voltage transformer

0 Answers  

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Explain the method to keep noises low in a control system?

0 Answers   HPCL,

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Damping resistor provided in open delta (tartiary) winding of a measuring PT at the incoming of a MV inverter drive panel is getting heated up. Can any body explain the reasons and suggest the remedy?

0 Answers   Danieli,

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why we use to transmit the power in three phases intead of single phase ?

4 Answers  

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