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What is the factors determining induced emf in dc machine?
The factors determining induced electromotive force (emf) in a DC machine include the strength of the magnetic field, the number of turns in the coil, the speed of rotation of the armature, and the angle of the coil relative to the magnetic field lines. The induced emf is directly proportional to the magnetic field strength, the number of turns in the coil, and the speed of rotation, while it is also affected by the angle of the coil in relation to the magnetic field. These factors collectively determine the magnitude of the induced emf in a DC machine.
Write any two factors on which strength of induced current depends?
The strength of induced current depends on the number of coils of the cunductor and the strength of the magnet.
What are the three ways in which voltage can be induced in a wire?
Voltage can never be induced in a straight open wire because flux through a wire is zero but a coil made up of a wire can have induced voltage. Methods Move a magnet to and fro through the coil, the magnitude can be changed by altering the relative velocities between them Move the coil relative to he still magnet Place the coil in a time varying magnetic field such that the flux linked through the coil changes with respect to time Place the coil tn an uniform magnetic field and alter its area with respect to time
What are the factors that determine the size and direction of the emf generated by the permanent magnet generator.?
number of conductors speed magnitude of the magnetic flux
What happens when a coil of wire cuts through a magnetic field?
If the magnetic field is fluctuating, or the coil of wire and magnetic field are moving with respect to each other, then a current is induced in the coil of wire. If the two are stationary and the magnetic field is stable, then no current is induced in the coil. However, if there is a current in the coil, from another source, then the coil and the field will exhibit a relative force that will tend to move the coil with respect to the field.
Is the size of the voltage induced in a coil through which a megnet moves affected by the strength of the magnet?
Yes, the induced voltage in a coil is affected by the strength of the magnet. A stronger magnetic field will generally result in a higher induced voltage in the coil, due to the increased rate of change of magnetic flux.
How does an induced voltage across a generator coil change during each revolution of the magnet?
sinusoidally
What is the factors determining induced emf in dc machine?
The factors determining induced electromotive force (emf) in a DC machine include the strength of the magnetic field, the number of turns in the coil, the speed of rotation of the armature, and the angle of the coil relative to the magnetic field lines. The induced emf is directly proportional to the magnetic field strength, the number of turns in the coil, and the speed of rotation, while it is also affected by the angle of the coil in relation to the magnetic field. These factors collectively determine the magnitude of the induced emf in a DC machine.
How voltage is induced in a permanent magnet pickup coil as the reluctor approaches alignment with the pickup coil.?
The Hall effect.
What would happen to the voltage and the magnet is withdrawn from the coil?
When the magnet is withdrawn from the coil, the magnetic field within the coil will decrease, inducing a voltage in the coil. This induced voltage will create a current in the coil that flows in such a way as to try to maintain the original magnetic field.
Write any two factors on which strength of induced current depends?
The strength of induced current depends on the number of coils of the cunductor and the strength of the magnet.
If a magnet is put inside one coil of wire a voltage is produced. What will happen if the magnet is put inside two coils of wire?
I would expect a voltage in both coils of wire.Note that, if the two coils are connected, the voltages (and corresponding currents) in the coils can interact. Also, if the two coils are NOT connected, they can STILL interact, since a current will produce its own magnetic field.
If the rate of motion changes so that the magnet is plunged in and out 6 times per second what will be the new induced voltage?
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A magnet is plunged in and out 6 times per second what is the induced voltage?
Plug it in all you want unless distance FLUX DENSITY is stated this is NO ANSWER
What factors determine the strength of a neodymium magnet?
The strength of a neodymium magnet is determined by factors such as the grade of the magnet, the size and shape of the magnet, the temperature it is exposed to, and the presence of any external magnetic fields.
What happens to the amount of voltage induced by pushing a magnet through loops of wire if the number of loops is doubled?
Also doubled.
How do the maximum and minimum voltages depend on the speed of the magnet?
The induced emf ie voltage in a conductor or coil is directly proportional to the rate at which the magnetic flux linked with it changes. So when the speed is less then dB/dt will be less and so induced voltage becomes less. If the speed is high then dB/dt will be very much high and so large emf will be induced.
