Answer / neha koul

The ac mains supply we get in our homes are not constant, this is variable i.e the frequency goes up and down, if we directly use the ac mains power many of our home elctrical appliances may get damaged, so we need a transformer which transforms the voltage and make it constant at some specific value due to electromagnetic induction and time varying magnetic field. The specific value of transformer depends on us that what value we want to give by stepping it up or stepping it down.

Answer / kumar.m

We need transformers for using step down / step up voltage.
and eddy current lossing .

In which working principal temperature transmitter work.explain in detailed.

0 Answers  

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what is the benift of HT metering & LT metering

1 Answers  

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For 300MW and over a distance 250 km, what voltage be selected? and no. of circuit?

5 Answers   DPL, NTPC,

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the circuit having same properties in either direction is known as.......

2 Answers  

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what is the condition for vector group of Dyn5

2 Answers  

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Why VCB and SF6 breakers to be used in HT used by cant ACB of higher rating to be used for 11kv and 33kv.

8 Answers   TCS,

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hi every body i am master student in control engineering and my project is slip control in trains i assumed a Dc motore as traction motor but i don't have characteristics of this kind of motor that is used in train. i want from every body if he or she has the characteristics or information about Dc motor that is used in train give me those information or technical characteristics .

0 Answers  

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i want to know is it possible to generate usefull power by coupling generator with motor & supply gives to motor by battery source then generator generates power. remove the battery source given to the motor & feed the supply from some of the generated power supply to the motor & motor runs continously. generator generate power contnously.is it possible ?

5 Answers   UltraTech,

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which protection function should measure RMS value of current&DFT value of current?

0 Answers  

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What is Form factor?

2 Answers   NTPC,

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how test transfomer(3 phase75kva) by megger

0 Answers   HPL,

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WHAT HAPPENED DC SERIES MOTOR FIELD WINDING OPEN. CAN POSSIBLE.

1 Answers  

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