Why sip ring used in ac motor also why its not used in dc motor?

2 Answers   RRB,

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Different between megger and contact resistance meter

3 Answers  

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What is meant by time harmonics and space harmonics?

0 Answers  

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WHY PROTECTION CT IS USED NEXT TO METERING CT?

1 Answers  

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How much UG cable size should i use so as to accomodate a ground + 2floors house. A 1.5ton AC & geysers(2) in each floor with lightings

2 Answers  

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EXPLAIN THE WORKING OF SERIES REACTOR IN HT CAPACITOR BANKS (FOR VOLTAGES & CURRENTS)

1 Answers  

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What is Neutral Transformer? what is the use of this?

4 Answers  

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what will happen if one of the phases from a 3-phase motor is disconnected?? stop/run at 2/3rd speed or run at same speed????

3 Answers  

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I want to calculate how much capacitor we connect to maintain the unity power factor? Is there any formula? Pls give me the answer

0 Answers  

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Why Stabilising Resistor used in REF circuit ?

0 Answers  

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Will an earth leakage trip be activated if the component or wiring is faulty on low voltage equipment.Example An electrical Cat Scarer placed in the garden and water gets into the wiring.

0 Answers  

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why rotor winding in induction motor is not earthed. normally we uses star winding in rotor .why?

3 Answers   Anglo Platinum, TATA,

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