Answer / subrat kumar das

TRANSFORMER LOSSES - Transformer losses have two sources-
copper loss and magnetic loss. Copper losses are caused by
the resistance of the wire (I2R). Magnetic losses are
caused by eddy currents and hysteresis in the core. Copper
loss is a constant after the coil has been wound and
therefore a measureable loss. Hysteresis loss is constant
for a particular voltage and current. Eddy-current loss,
however, is different for each frequency passed through the
transformer.

why voltages are added when batteries are connected in series?

4 Answers  

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How many kinds of E.L.C.B and how to work E.L.C.B

0 Answers   Accenture,

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I BOUGHT A HAVELLS ACCL WITH GENERATOR STOP FASCILITY(i.e- BASICALLY IT IS A AUTO CHANGE OVER SWITCH) FOR MY HONDA EXK 2000S HOME GENERATOR (WHICH START IN PETROL & RUN IN KEROSENE). ACCL HAS 8 POINT. 2 FOR MAINS(PH & NUE), 2 FOR LOAD, 2 FOR GEN AND 2 FOR IGNITION POINT(X1 & X2). THE IGNITION POINT IS SPECIALLY FOR AUTO ENGINE STOP WHEN MAINS POWER RESTORE. I CONNECT THIS X1 & X2 POINT TO THE GENERATOR STATER MOTOR & EARTHING POINT. BUT WHEN MAINS FAILS THE GENERATOR COULD NOT START, BUT WHEN DISCONNECT THOSE X1 OR X2 POINT, THEN THE GENERATOR START. BUT WHEN MAINS ON THEN THE GENERATOR SHOULD START, AND WHEN I OFF THE MAINS THE GENERATOR AUTOMATICALLY STOP. PLESE HELP ME HOW I STOP THE GENERATOR AUTOMATICALLY WHEN THE MAINS RESTORE.

2 Answers   Honda,

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1 Answers   Getco,

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what is the diff. between AVR & H.T.Stabilizer

2 Answers  

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3 Answers  

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role of shunt coil in circuit breakers

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2 Answers   NLC,

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4 Answers   KSK Energy, Reliance,

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0 Answers   BARC,

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what is the difference between kva and kw ?

5 Answers   TCS,

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how to calculate of which rating transformer should be selected? take any example

2 Answers  

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