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How do you compute instantaneous value at given time of three phase alternator?
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∙ 11y ago
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∙ 11y ago
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Total instantaneous power supplied by a 3-phase ac supply to a balanced R-L load is?
sinusoidal with non-zero average.
How do you compute powe available on a 3 phase circuit?
Root 3 x voltage x current x power factor = power in watt
What is a phase out policy?
A phase out policy refers to a policy that stopped a given old policy.
For a 3 phase alternator why there is an AC voltage generated in the absence DC excitation?
due to residual magnetism
How does single phase alternator differ form a dc ganerator?
Single phase alters from positive to negative at 50 (50hz) or 60 (60hz) times per minute. While in dc it does not vary but stays at a constant positive phase.
What is Regulation of alternator by synchronous impedance method?
It is conducting OC and SC tests on the given three phase alternator and determining the regulation by synchronous impedance method.
What is the difference between FM and PM?
FM - frequency modulationPM - phase modulation1. FMused to vary/change the instantaneous frequency of a carrier wave for transmission2. PMused to vary/change the instantaneous phase angle of a carrier wave for transmission
How do you derive alternating current from car alternator?
The car's alternator is a three phase generating system. Inside the alternator is a three phase full wave diode bridge that changes the AC generated voltage to a DC voltage.
What is the difference between power factor and power booster?
Power factor is well defined and measures the difference between the phase of current and voltage. It varies from 1 to zero with 1 being associated with a pure resistive load. Since you multiply voltage times current to compute instantaneous power; if they are out of phase then you get reduced power. A power booster, in this context, would be a device that was designed to compensate for the our of phase situation and bring the phases more in line, effectively boosting power.
How can the phase rotation of one alternator be changed in relationship to the other alternator?
alternators will charge in either direction; they are three-phase systems fed through an internal rectifier, so it is irrelevant.
How many coils is required in an alternator to generate 3 phase electricity?
3
What kind of electricity is produced by a car?
the alternator produces a 3 phase AC electrical current that is "converted" into a single phase DC electrical current. This is done courtesy of the diode trio located in the regulator assembly of the alternator. typical output of an alternator is about 14 v DC and about .1 V AC.
Total instantaneous power supplied by a 3-phase ac supply to a balanced R-L load is?
sinusoidal with non-zero average.
Is a diode part of an alternator or the car?
There is a three phase diode bridge in a vehicles alternator. The voltage is generated as three phase AC. The diode bridge converts the AC voltage to DC voltage. This is the DC voltage that is used to charge the battery of the vehicle and run the vehicles electrical systems and equipment.
What condition to deliver the power when alternator generating a different value of voltage not exactly in phase with the power line?
The phase sequence must be the same "ElectEng 309 ;-)"
How do you compute powe available on a 3 phase circuit?
Root 3 x voltage x current x power factor = power in watt
What is the working principal of 3 phase alternator?
A 3 phase alternator is an AC electrical generator with 3 sets of windings in the stator. These windings overlap each other in phase angle, or timing relationship, by 120 degrees with respect to each other. The rotor (field or excitation) current is DC, and is adjusted to regulate the output power.
