why transformers not work at d.c.-
Answers were Sorted based on User's Feedback
Answer / sandeep
Transformer must not be connected to a DC Source because if
the primary winding is connected to DC Supply mains, the
flux produced will not vary but remain constant in magnitude
and therefore no EMF will be induced in secondary winding
except at the moment of switching ON. Also there will be NO
Back EMF induced in the primary winding. Therefore a heavy
current will be drawn from the supply which may result in
the burning of the winding.
In Transformer, If primary winding is connected to a source
of alternating voltage, an alternating flux is set up in the
laminated core and links with the secondary winding of the
transformer in which it produces mutually induced e.m.f
according to the principle Faraday's Laws of
Electromagnetic Induction.
Is This Answer Correct ? | 10 Yes | 1 No |
Answer / reji
the above ans is correct. moreover, the DC resistance of T is much less compared to its reactance. ie, impedance is huge . thus when T is connected to DC, a very high current will flow and the winding will certainly burn.
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / aravind s
transformer works with mutual induction principle mutual induction must want change of flux or change of conductor.and transformer have non movable parts so we use principle of change of using frequency.
and also transformer works in DC (when it is pulsetting DC)
Is This Answer Correct ? | 0 Yes | 0 No |
Please provide me detail cable voltage drop calculation
How DC earth leakage currents can be reduced ?
how i decrease the neutral to ground voltage , thats i read 7v on my digital meter.i dont know about my earth pit.
The sodium vapor lamp is not glows when it is connected a distance of 5 meters above from gearbox, why ?
why a diode bridge is provided in vcb control circuit ?
New istallation how many eathing have one transformer? Names of earthing connect places?
What is the function of Lightning Arrester & Wavetrap in Power system ??
18 Answers ABB, Bhel, Energy Infratech, Infosys, NTPC,
one kva is equal to how much amps?
what is the principle of dc generators?
what is use of stater and choke in tube light.?
what will be happened when a single phase motor is supplied by the dc supply
how the B-H loop obtain under the static condition