Answer / vinothkumar

Which is transferring the power from one circuit to another
circuit with out changing the frequency is called transformer.

Answer / bhadrappahr

Which is transferring the power from one circuit to another
circuit by stepping out or step down the voltage correspondingly stepping down or step up the current without changing the frequency is called transformer.

Instead of single phase(220), if we apply Phase to phase (R&Y)supply (eg: for lighting fixture). what will be the power formula?

1 Answers  

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which connection is safer series or parallel?usually which connection we prefer at home?

5 Answers  

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what is voltage

7 Answers   TCS,

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HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.

0 Answers  

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I need model question papers for RRB section engineer Chennai... Please send to my E-mail Id:- maitheerainbow@gmail.com

0 Answers   NTPC,

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what is use of reactive power in ac ckt.

2 Answers  

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Ohms law explain

1 Answers   Hetero,

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why ground clearance of EHV line is more than HV line??

2 Answers  

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what do you call the last pole on a overhead line near a substation

2 Answers  

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what is the difference between elcb,rccb,mcb.

8 Answers   HCL, RCCB,

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in power generator normaly voltagr betwween esth to neutral is 0 but my work place generator show the volatge is 60v any body know why? thanks

0 Answers  

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How to calculate KVA/VA rating of PT or CT from primary & secondary voltage or primary & secondary current?

0 Answers  

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