why in dc generator field rheostate kept in maximum position?

1 Answers  

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why is one voltage transformers (instead of three ) installed at the entrence of the incoming line in a substation.

2 Answers  

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On wat basis TSM & PSM are set? Example.TSM=30% n PSM=2.5A....Hw they are set and how we come to know that the particular relay should be set to this value only?

2 Answers  

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Why don't connect earth wire to elcb?if earth fault occur,how will detect it

1 Answers   TATA, Tata Communications, Telecommunications,

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what r the safety measures in UPS ? explain all?

0 Answers   Wipro,

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what are the main parts of UPS what is the function of that?

23 Answers   Apollo, HCL, Liebert, Royal Furnishers, Tech Mahindra,

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electricity bill multiplication factor 487.20xconsumption=total unit in kwh. what is 487.20 ?

1 Answers   Spec International,

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what is the difference between surge arrestor and surge supressor

1 Answers  

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why we use star connection on the primary side of a transformer?

5 Answers   DRDO, TCE,

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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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1. What are the tests to be carried out for CBCT? 2. can measure the secondary resistances? 3. with respect to secondary maximum how much voltage can be applied for IR test.

0 Answers  

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how to select a cap,when a fan is required 2.5 micro ferad cap,then how we know about 1 hp motor?

1 Answers  

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