Bcoz in single phase if supply is interrupt or any trouble there is no power .but in 3 phase if 1phase supply gone we can manage it by other 2 phases
You don't. A three phase motor will not start unless it is connected to a three phase supply.
No.
The choice of single or three phase depends on the available supply. But a three-phase full wave rectifier provides 6 pulses of DC per cycle, while a single-phase full-wave rectifier provides only two. That makes the output DC easier to smooth.
Yes. This is often done in distribution boards.
Yes, there a difference between three phase and single phase electrical supply services.
Single phase is not preferred over three phase, it is the system used that the application needs to operate with. There are more single phase installations than three phase due to the fact homes operate on that system. Where as most commercial and industrial applications call for a three phase system to supply their power needs.Single-phase and three-phase are different types of power supply.Most houses and small businesses have a single-phase supply, which could be a simple live/neutral two-wire supply, or a split-phase supply with two lives and a neutral so that there is 120 v between the neutral and either live wire, but 240 v between the two live wires, which is used for loads of over 1500 watts.When necessary, properties that use more power have a three-phase supply which has three live wires and a neutral. The supply can be taken in the form of three separate single-phase supplies, or in some cases appliances such as large motors need a three-phase supply to work correctly.A three-phase supply is described by the voltage between any two of the three live wires, and the voltage from neutral to each live is 1/sqrt(3) times as much, in other words 42% less.Typical three-phase supplies are 120/208 v, 230/400 v, 240/415 v, 277/480 v and 347/600 v. The first figure is the live-neutral voltage and the second is the live-live voltage. Single-phase supplies can be taken between live and neutral or between lives.Three-phase is preferred for power transmission over longer distances, and voltages up to hundreds of kV are used. In this case the neutral is omitted because when the three currents in the live wires are equal the current in the neutral is zero.
yes in star trek
Your question is rather vague. If you are asking what do you call a group of single-phase transformers, connected to supply three phase, then the answer is a 'three-phase transformer bank'.
To use a single/one phase motor instead of a three phase motor is possible if you have a three phase power supply as you will only need to tap one of the three phases together with neutral and an earthwire, however to use a three phase motor instead of a single phase will require the provision of three phase power supply.
You cannot obtain a three-phase supply from a single-phase system without using some sort of rotary converter.
A single-phase supply is obtained between any two line conductors or between a line and neutral conductor of a three-phase supply. To obtain a three-phase supply from a single-phase source is far more difficult, and requires additional equipment.
because all over the world there is an standard rate of voltage