This question is nonsense because a dc supply has no "frequency".
In any circuit supplied by direct current, the current always flows in the same direction from the point in time when the current is switched on until the point in time when it is switched off.
Comparing a circuit that has both resistance and inductance with a circuit that only has resistance:
Until a steady-state level of current flow has been reached from the point in time when the current is switched on, the current will rise at a slower rate in the circuit that has inductance compared with the circuit that only has resistance, because the inductance impedes the build-up of current.
Then, when the current is switched off, the flow of current will stop instantly in the circuit which only has resistance but in the circuit that has both resistance and inductance, the sudden drop in current will cause a high voltage potential to be developed across the inductor which will dissipate slowly back down to zero through its own resistance.
However, if a spark-gap is connected into the circuit across the winding of the inductor - and its inductance is sufficiently large and the spark-gap is sufficiently small - when the current is switched off the high voltage potential across the inductor will generate a spark to appear across the spark-gap that will "zap" the high voltage almost instantly. That is the principal of operation of the spark-ignition coil used to ignite the gas/air mixture in a gas engine using "spark-plugs".
i think in case of dc supply there will not be any induction
An inductor cannot work in dc because the frequency is zero there by making the inductive reactance zero as a consequenceAnswerOf course an inductor can work in a d.c. circuit!
A DC shunt motor is a motor using DC supply with the the inductor connected parallel to the armature.
Yes, it possible to heat a coil using dc power supply. An inductor resists a change in current, proportional to voltage and inversely proportional to inductance. The equation of an inductor is di/dt = v/L An ideal inductor, if connected to an ideal DC supply, with ideal conductors, would ramp up current in a linear fashion without limit, eventually reaching infinity amperes after infinite time. Since no inductor is ideal, nor is any DC supply, nor is any conductor, the current would reach a maximum based on the capacity of the DC supply and the DC resistance of the inductor and conductors. Since the DC resistance of the inductor is also not zero, this means, by Ohm's law, that the inductor must dissipate some power. That will cause the inductor to heat up.
Yes, an inductor allows DC to pass through it. An inductor resists a change in current, proportional to inductance and voltage. At equilibirum, an ideal inductor has zero impedance. The differential equation for an inductor is di/dt = v / l
A DC shunt motor is a motor using DC supply with the the inductor connected parallel to the armature.
When a DC supply is applied to an inductor, it initially resists changes in current due to its property of self-inductance. As the current starts to flow, the inductor gradually stores energy in its magnetic field. Once the current reaches a steady state, the inductor behaves like a short circuit, allowing the current to flow freely without any opposition. Thus, in the long term, the inductor does not impede DC, allowing it to pass through.
Inductors are low pass devices, they conduct most easily at low frequencies. DC is the limiting case for low frequency AC: i.e. DC is the lowest possible AC frequency, zero Hz and thus conducts best through an inductor. Capacitors are high pass devices, they conduct most easily at high frequencies. Infinite frequency AC is the limiting case for high frequency AC. Infinity Hz would conduct best through a capacitor.
While it is true that an inductor opposes the flow of an alternating current, it does not necessarily 'block it'. The quantity that opposes the flow of an AC current is the inductor's inductive reactance, expressed in ohms. Inductive reactance is proportional to the frequency of the supply voltage and, at 50 or 60 Hz, the reactance of a transformer's winding is relatively low (although very much higher than its resistance) and, while this acts to limit the amount of current flow, it certainly doesn't act to block that flow.
A change in current through an inductor will induce a voltage into that conductor, the direction of which will always oppose that change in current. This is a natural phenomenon due to the conservation of energy.
If a DC supply is connected to the incomer of a transformer, you effectively have a short circuit, because the DC impedance of a transformer (actually, any inductor) is quite low. You will blow something.
An inductor is called a choke because it "chokes" or limits the flow of alternating current (AC) while allowing direct current (DC) to pass through. It acts as a choke to high-frequency signals, effectively blocking them while allowing DC or low-frequency signals to pass.