What is ERD used in Elevators??

1 Answers   Emerson,

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tell me any book for current n potential trasformer with full knowledge ?

1 Answers  

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At no load the PF of an alternator -Zero -Zero Lagging -Zero leading -None of the above

2 Answers  

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Can 4pole (3 phase+neautral )RCCB proper functioning in only 3 phase load (no neautral, no Earth) ?

0 Answers   HCL, Reliance,

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What are hrc fuses and where it is used?

0 Answers  

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How can i modify the design of 3 phase induction motor to be as 3 phase synchronous motor??

2 Answers  

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what is buchholz relay?what is it used for?

8 Answers   Engineers India Limited, NFCL,

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why grid failure happens?

1 Answers  

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What is the use of Isolation Transformer, and Neutral is using for return path, finally this current is going.... but same time the voltage of the neutral should be below 1 V...

6 Answers  

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why the generator will take 8 to 12 hours to start after it got interrupted due to technical problems in case of power plants.

1 Answers   NTPC,

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What are the possible causes if load is not same on all the three phases

4 Answers  

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what is inrush curent.

5 Answers   BARC,

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