Answer Posted / vinod

for connecting Ammeters suitable range of CT should be
selected.
40/5 means there will be 40A in the line and the secondary
5 amps will be given to ammeter for reading

HOW WE KNOW IN PHYSICALLY THE CONTACT SURFACE OF A VACUUM INTERRUPTER IS GOOD OR GOING TO DAMAGE IN A VCB AFTER ABOVE 500 TIMES OPERATED.

2060

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acb(AIR CIRCUIT BREAKER)NOT CHARGING AUTO

2402

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how to select energy meter? have any calculation?

3021

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Starting times for soft starter & power factor is thier any standard or datas available in manufactures list. Kindly suggest.

1941

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What is meant by analogous system?

1303

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state the working principle of incondenscent tube?

1948

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Why electrical power generation and transmission done in 3 phase system not more than 3 phase ?

3082

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If the line voltage is reduced to 75% of its rated value then by what percentage current will reduce ?? 75% 25% 50% no change and why ?

2200

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ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

2031

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Batteries used for electrical energy storage are a. Laclanche cells b. Edison cells c. Lead acid cells d.any of the above

1915

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what is relay what is protection & contact multiplying relays where it is used function in brief

1190

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Fantio of tranformer

2243

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What is the Basic Difference bitween Long Shunt Connection and Short Shunt Connection in DC Generator?

2357

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what are the condition that makes hooter blow?

2457

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salam&hi, i need to know about how can i calculate an enough current for the new building before i submit it to the suppliers

2098

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