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single phase motor have a single winding and in three phase motor have a three winding
AnswerA three-phase alternator (generator) has three stator windings, physically displaced from each other by 120 degrees. When the field winding rotates, it induces three, separate, voltages into each winding which are then displaced from each other by 120 electrical degrees.Depending on the way in which the alternator's windings are connected, you then have either three or four external wires that will connect that alternator to the load (usually via three-phase Transformers). Three of these wires are 'hot' and called 'line conductors' and the fourth is called a 'neutral conductor'.
The potential of each line conductor is displaced from the other line conductors by 120 degrees, and the potential difference between each line conductor is called a 'line voltage'. The potential difference between any line conductor and the neutral is called a 'phase voltage'. For a four-wire system, the line voltage is 1.732 time the value of the line voltage.
A single phase connection is obtained by connecting a single-phase load either between any two line conductors of the three-phase system, or between one of the line conductors and the neutral conductor -depending on the level of voltage required.
Alternatively, a single-phase system could comprise an alternator with just one winding, and supplying two conductors, a line conductor and a neutral conductor.
Answer: Single-phase is a pair of conductors providing ac power, with the voltage following a sine-wave of variation with time, usually with a frequency of 50 or 60 cycles per second (Hz). Three-phase uses three single-phase supplies with the sine-waves peaking 120 degrees apart during one 360-degree cycle.
That is useful because it means that the instantaneous sum of the three currents is zero, and therefore the three neutral wires can be replaced by one wire that is common to all three circuits and no net current flows in the neutral provided the three circuits supply equal currents. When that happens no power is lost in the neutral, and the transmission losses have been halved when compared with three separate single-phase supplies.
In many cases the neutral wire is retained in case the three circuits have to supply unequal currents, which is a three-phase four-wire system. Alternatively when the load is balanced (equal currents in the three circuits) the neutral can be omitted altogether and that is a three-phase three-wire system.
Power distribution worldwide uses three-phase for efficient transmission, except for low-power low-voltage supplies (120/240v) as used for residential properties and small businesses.
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What are some advantages of 3-phase power over 1-phase power?
There are several advantages of 3-phase power over single phase power. First, with 3-phase power, more power can be transferred with the same amount of wire (meaning the amount of copper used in all of the conductors transferring that power) as with single or 2-phase power. Also, power is transferred more "evenly" with 3-phase power because the "next peak" is closer than it is with single and 2-phase power. The 3-phase motors run more smoothly than those run on fewer phases. Also, there are motor design considerations (one being control of the direction of rotation) regarding the motor that make 3-phase power more attractive. Use the link to the Wikipedia article on 3-phase power and skim it. It isn't long and it is quite readable.
Do televisions use single-phase or 3-phase power?
Answer 1: TV's use single-phase power. Answer 2: TV's use single phase power of 220 or 110 volts ac power depending on what part of the world you live in.
How you convert the value of single phase power to value of 3 phase power?
Electric power is measured in watts. It does not matter if it is single phase or three phase. All things being equal, for the same load, the power measured in a single phase circuit or a three phase circuit, will be the same.
Is 10 kva supply to 3 phase load is equal to 10kva supply to single phase load?
Yes of course!! 10 kva electrical power is 10 kva electrical power either it would be three phase or single phase. But other factors i.e. current, voltage changes accordingly. Actually this question is quit confusable. Because in 3phase system, if each phase gives 10kva power (single phase power = 10 kva) then 3 phase power will be 10 X 3 = 30 Kva If we go leteratualy towasrds the question, then the asnwer will be - No. becasue 10 kva supply to 3 phase load will be 3phase supply(i.e440V) & 10kva supply to single phase load will be single supply (i.e 250V).
What are the procedures for the connection of single and 3 phase circuits?
Single phase connection has 1 phase wire and a neutral wire. Another wire for protective earth. In three phase system, motor can be connected in star or delta. Most AC induction motors are in Delta. Power distribution system is generally 3 phase 4 wire. Transmission system is 3 phase high voltage. Industry uses 3 phase system, where as 1 phase is for domestic, commercial applications. Both 1 and 3 phase system has a frequency. It is either 50 Hz or 60 Hz, depending upon the country or region.
Why 3 phase ac systems is preferred to 4 phase?
3 phase system has more power than a single phase system
What are some advantages of 3-phase power over 1-phase power?
There are several advantages of 3-phase power over single phase power. First, with 3-phase power, more power can be transferred with the same amount of wire (meaning the amount of copper used in all of the conductors transferring that power) as with single or 2-phase power. Also, power is transferred more "evenly" with 3-phase power because the "next peak" is closer than it is with single and 2-phase power. The 3-phase motors run more smoothly than those run on fewer phases. Also, there are motor design considerations (one being control of the direction of rotation) regarding the motor that make 3-phase power more attractive. Use the link to the Wikipedia article on 3-phase power and skim it. It isn't long and it is quite readable.
What are the Advantage of three phase motors over single phase?
A 3 phase system needs only to use 3 or 4 conductors, as against 6 conductors if it were 3, single phase conductors The amount of copper used in a 3 phase is much less than what would be needed in a single phase system carrying the same current, this reduction in copper allows for weight reduction and cost savings. The power losses in a 3 phase system are much less than in a single phase system.
How do you convert a 3-phase system to a single phase?
By having a transformer with 3 phase input and single phase out put
How do you connected 3 phase motor to single phase power?
Use VFD to make 3 phase from single phase source.
Do televisions use single-phase or 3-phase power?
Answer 1: TV's use single-phase power. Answer 2: TV's use single phase power of 220 or 110 volts ac power depending on what part of the world you live in.
The total power in a 3 phase system may be measured using a single fixed wattmeterprovided the?
load is balanced
How you convert the value of single phase power to value of 3 phase power?
Electric power is measured in watts. It does not matter if it is single phase or three phase. All things being equal, for the same load, the power measured in a single phase circuit or a three phase circuit, will be the same.
Why 3 phase and single phase?
3 Phase system is for industrial use and 1 phase is for house hold application
Is 10 kva supply to 3 phase load is equal to 10kva supply to single phase load?
Yes of course!! 10 kva electrical power is 10 kva electrical power either it would be three phase or single phase. But other factors i.e. current, voltage changes accordingly. Actually this question is quit confusable. Because in 3phase system, if each phase gives 10kva power (single phase power = 10 kva) then 3 phase power will be 10 X 3 = 30 Kva If we go leteratualy towasrds the question, then the asnwer will be - No. becasue 10 kva supply to 3 phase load will be 3phase supply(i.e440V) & 10kva supply to single phase load will be single supply (i.e 250V).
What are the procedures for the connection of single and 3 phase circuits?
Single phase connection has 1 phase wire and a neutral wire. Another wire for protective earth. In three phase system, motor can be connected in star or delta. Most AC induction motors are in Delta. Power distribution system is generally 3 phase 4 wire. Transmission system is 3 phase high voltage. Industry uses 3 phase system, where as 1 phase is for domestic, commercial applications. Both 1 and 3 phase system has a frequency. It is either 50 Hz or 60 Hz, depending upon the country or region.
What are the advantages of using a three-phase system over a single phase system?
For the info. of everybody..... the 3-phase system is definitely use in large commercial & industrial plant that uses large equipment/apparatus, like motors powered by more than 230v supply. However, single-phase system was commonly used in residential, which uses 230V or 110V equipment/apparatus, also considered as light load.... Daryll Jan of Sorsogon City, Philippines (10yrs. old, Grade V) POWER OF 3 PHASE SYS = 3 TIMES OF THE POWER FOR 1 PHASE SYSTEM
