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Why electrical supply are multiple of 11kv?
It is due to presence of form factor(Kf) in the emf equation of Alternators and transformers. Value of form factor is 1.11.
What does the emf equation of asingle phase transformer do?
The emf equation of signal phase transform
How do you control voltage and power factor for alternator?
Since it the rate at which the flux is cutting the conductor determines the (EMF) electromotive force which is the voltage, the best way to control voltage is to adjust the speed of the engine through the governor, coupled with an automatic voltage regulator.
What is EMF used for?
assuming you mean electromotive force: emf is the main principle behind power transformers. emf also comes in the form of radio waves, which are used for radio transmission (obviously)
How initially voltage build up in an alternator by residual magnetism?
The residual flux will help the phenomenon of changing flux. So that emf generation takes place.
How is emf induced in an alternator?
EMF or electromotive force, i.e.Voltage, is generated when the magnets inside the alternator turn within the wire coil of the alternator.
Why electrical supply are multiple of 11kv?
It is due to presence of form factor(Kf) in the emf equation of Alternators and transformers. Value of form factor is 1.11.
What three things are required to produce EMF in an alternator?
armature, stator, rotor
What does the emf equation of asingle phase transformer do?
The emf equation of signal phase transform
What will happen if generator is overexcited?
if a generator is overexcited it is producing a large amount of reactive power which requires an increase in the alternator emf. To produce this emf, the rotor currents must increase resulting in extreme ohmic rotor losses.
How do you control voltage and power factor for alternator?
Since it the rate at which the flux is cutting the conductor determines the (EMF) electromotive force which is the voltage, the best way to control voltage is to adjust the speed of the engine through the governor, coupled with an automatic voltage regulator.
What is EMF used for?
assuming you mean electromotive force: emf is the main principle behind power transformers. emf also comes in the form of radio waves, which are used for radio transmission (obviously)
Is lenz law used to find induced EMF's?
It's primary usage is to determine the nature of an induced EMF from changes in the magnetic flux through a circuit. However, you must use Faraday's Law (and a unit conversion factor) to determine the SIZE of such an EMF.
How initially voltage build up in an alternator by residual magnetism?
The residual flux will help the phenomenon of changing flux. So that emf generation takes place.
what will be the emf of the battery when Four cells each of emf E are joined in parallel to form a battery?
E. Joined in parallel, the voltage (or electromotive force, "emf") isn't additive. You'd get four times the current, or four times the life of a single battery, but it would have the same voltage.
How are emf measured?
emf in volts
Why emf of battery driving potentiometer is greater than emf of the cell to be measured?
Bcoz the emf which is to be measured is less than emf of driving cell....
