Answer Posted / deepankar

If a constant dc is
applied then primary of
transformer will burn
out.
However if a variable
dc is applied as
obtained from rectifier
without filter then it will
work in same fashion
as on ac.

how to calculate current carring capacity of cable and cable selection? 1) copper flexible cable 2) copper armoured cable 3) Aluminium cable

1591

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in star-delta tranformer,if the input of star connection is 400/7v 3 kva then what is the output of delta connection?

2102

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i want to run 11kv star connected motor in 6.6kv with delta connected throught inverter, is it possible?

2017

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What is meant by analogous system?

1269

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what will happen if i connect 12 volt battery with 24 volt battery charger.

1876

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how to check avr of dg set of 125kva

2573

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What is the minimum underground tank size capacity considered for firefighting purpose?

1939

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How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?

2014

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1.what is the difference between transformer differential and busbar differential.2)why we are using 2 slope for trafo diif and 1 slope for busbar diff.3)what is the purpose of metrosil and stabilizing resistor in high impedance relay circuit.4)how metrosil reduce the peak volage.5)what is the funtion of stabilizing resistor

4841

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What is meant by short-pitched winding?

1183

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what is the working principle of energy saver control panel. please give the complete calculation & theory.

2424

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What is resistance of 50meters, 16sq.mm, single core copper cable?

1868

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Why do we use copper cable for HT Supply and why not Aluminium?

1996

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While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x

1908

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why are u join ntpc

2141

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