Why an ac solenoid valve attract the plunger even though we interchanges the terminal? Will the poles changes?

0 Answers  

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What are the protection used for alternator,transformers.

2 Answers   Adani,

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Is any generator is developed which is operated with out diesal or other expensive source?

0 Answers  

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How can we have to decided motor connection as a STAR-DELTA or DELTA-STAR?

3 Answers   IOCL, Jindal,

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If 3-Ph motor of same rating connected in Delta & Star for same load one by one then which connection take more current in running (not in starting)for full load.(eg 8.5 KW,3-Ph 400 V)

1 Answers   GE,

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for selection of transformer we will considering 5 to 6 times of starting current of higher rating motor connected to secondary side. according to process wise we will start the motors gradually suppose if we will start 15 to 20 motors at a time wat will happen?

1 Answers  

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in ACB breaker requireding 3200Amps. buscoupler getting OFF mode and again it reset and getting normal position give me a required answer?

0 Answers  

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Why Lightning arrester used? Can we use piece of iron as a core material of transformer, if No, why? In CRGOSS material what is meaning of cold rolled grain oriented? Why Impegrenation of Transformer is done? Properties of Insulator? what is phase angle? Testing of transformers (Routine & Monthly)?

6 Answers   NTPC,

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what are the difference between AC lamp and DC lamp

0 Answers   Apollo,

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how to find the transformer effiiency

3 Answers   Bosch,

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how we design a pannel to start 10HP motor with the help of star delta starter?

0 Answers  

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The rotor current is directly proportional to slip. How?

3 Answers  

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