What will happen if DC supply is given to the transfomer?

Answer 1

A capacitor resists a change in voltage. Initially, a capacitor given a DC voltage will appear to have very low resistance, but as current flows and time goes by, the resistance will increase as the voltage approaches the applied voltage. At equilibrium, the voltage across the capacitor will be equal to the applied voltage, the current will be zero, and the resistance will be infinity.

Answer 2

A capacitor is like a small battery wired in series to your circuit it acts like a battery and stores current, depending on the type of capacitor it can store voltage for a few seconds to a few hours after the circuit is turned off - for example a capacitor is used in an automotive airbag system to ensure there is power to deploy the airbag during a crash - another example is a large capacitor is used in a stereo system to allow for the heavy current draw for a subwoofer - without a capacitor your headlights would dim on every loud bass note due to excess current draw - I hope this helps answer your question -

Answer 3

First of all, the transformer wouldn't work, because it requires a continuous variation in the magnetic flux linking the primary and secondary windings in order to induce a voltage into the secondary winding. Further, because the primary winding has a relatively-low resistance, if a d.c. voltage of similar magnitude as the winding's rated a.c. voltage were applied to that winding, it is likely that the primary winding would burn out.

Answer 4

Once equilibrium is reached, DC cannot pass through a capacitor. That is one of the effects of a capacitor. If DC did pass through it, it would either have leakage or it would be defective.