what happens if dc supply is given to the transformer?
Answer Posted / b.sivayya
transformer is not connected to dc.in dc there is no
frequeny.there no changes in frequency and dc is given to
primary there flux is produced but these flux is not
change.so there is no back emf so the secondary current is
equal to primary current so large current is flows through
the windings .so the winding is burn..
| Is This Answer Correct ? | 6 Yes | 3 No |
Post New Answer View All Answers
Why the power factor improvement is so important in industrial loads
What is meant by full pitched winding?
What the formula for calculating no.of earthings & size of earth strip for 100mX90m shop.
Thumb rule of cable size(rm>30 rm)X multiplying factor=ampere
new 90kw motor installed so how I purchased cable ,fuse,etc please give me technic for cable selected why always capacitor delta connection
hi friends this is a newcomer in your community of enthusiastic peoples. i am preparing for SSC (CPWD JUNIOE ENGG EXAM FOR ELECTRICAL) pls guide me on the same how to crack it? PLS LET ME KNOW IS ANYONE THERE WHO PASED IT? CAN I GET THE QUESTION PAPERS OF PREVIOUS EXAMINATIONS?
What is different between resistance grounding system and resistance earthing system?
what is an unbalance in acircuit? in a three phase 3wire circuit how an unbalance will come? in a three phase four wire system how an un balance is coming?
what happen if field of dc shunt motor opens? what is function of putting res. in parallel to one phase of 3 phase IM? the power supplied by 5A source in circuit is given by------Watt.
Define noise?
why the NGR (neutral grounding resistor) always OFF during DG off?
What is principle of Floroscent tube 36watt.
what should be correct gas pressures to be a 1.5 ac unite
WHAT IS THE DIFFERENCE BETWEEN GENERAL INVERTER AND SOLOR INVERTER TELL ME PLZ
why induction motors are rated at 0.8 power factor.