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What else can I help you with?
What are the reasons for conducting transformer turns ratio?
The reason for conducting transormer turns ratio is to determine if the transformer is a step-up or step-down.AnswerTo determine the turns ratio if the turns ratio is unknown.
No-load and full load transformer?
A: a transformer will follow the rule of input output ratio with no load. As soon as a load is applied there will be changes in the ratio
What is principle of autotransformer?
to step up or step down high voltageAnswerThe principle is that of electromagnetism. An auto transformer has only one winding which has (usually) one tap on it.If a voltage is applied across the whole winding, and connections are made between one end and the tap, a lower voltage is available on those connections.The magnitude of that voltage has a ratio to the overall applied voltage as the ratio of the number of turns across which the voltage is taken, to the total number of turns.Or, if a voltage is applied between one end of the winding and the tap, then an increased voltage may be obtained across the whole winding.The ratio of the two voltages being the same as the ratio between the number ..... but I'm sure you can guess the rest.
How do you calculate current on the primary side of a transformer only knowing the turns ratio and the voltage ratio?
The primary current on a loaded transformer depends on the secondary current, which is determined by the load. So, if you know the secondary load current, then you can use the turns ratio of the transformer to determine the primary current:Ip/Is = Ns/Np
Can I use a 120 v 24 v 75 VA transformer instead of a 120 v 24 v 40 VA transformer?
Yes that would work. It's all about the ratio. As long as the rated voltage is not exceeded, as there will be a limit to what the insulation can stand, before breaking down. Lower voltages than rated will be safe.
Is the turns ratio of transformer the same as the ratio of voltages across the transformerwhy or why not?
In general the turns ratio is equal to the ratio of voltages. A few turns might be added to the secondary to provide extra voltage to offset the voltage drop caused by the resistance of the secondary when the transformer is supplying a load.Another AnswerFor an 'ideal' transformer, the answer is yes, and the reason is based on the e.m.f. equations for a transformer which, for the primary winding is: Vp = 4.44 Np f x flux ...and, for the secondary winding is: VS = 4.44 NS f x fluxSince the frequency (f) and flux is common to both windings, dividing one equation by the other will result it:VP/VS = NP/NSSo, as you can see, the voltage ratio and the turns ration are the same.
How are lower voltages combined into higher voltages for transmission?
Low voltages are not 'combined into higher voltages' for transmission! The lower voltage (e.g. the voltage generated at a power station) is applied to the primary winding of a large power transformer, and the required higher transmission voltage then appears across the transformer's secondary winding. The magnitude of the secondary voltage is determined by the turns ratio of the transformer's windings.
Does the formula used to calculate the turns ratio uses the phase voltages and phase current?
For a transformer, the turns ratio always applies between its primary and secondary windings. So the turns ratio for a three-phase transformer is the ratio of primary to secondary phase voltages, not between line voltages.
What is approximate turns ratio of the centre-tapped transformer used?
It depends on the voltage ratio of the transformer. If you know the primary and secondary voltages, then you can work it out for yourself.
How do you determine transformer turns ratio if the supply source and load is given?
Transformer turns ratio is the ratio of voltages between two windings. For instance, a 24VAC control transformer that runs on 120VAC will have a turns ratio about 5 to 1.
Is the ttU1lS ratio of a transfonner the same as the ratio of voltages across the transfonner?
Yes, the turns ratio of a transformer is directly related to the ratio of the voltages across the transformer. Specifically, the voltage ratio (primary voltage to secondary voltage) is equal to the turns ratio (number of turns in the primary winding to number of turns in the secondary winding). This relationship is expressed by the formula ( V_p/V_s = N_p/N_s ), where ( V ) represents voltage and ( N ) represents the number of turns. Therefore, if the turns ratio is known, it can be used to determine the voltage ratio and vice versa.
What is voltage ratio on a transformer?
The voltage ratio of a potential, or voltage, transformer (PT or VT) depends upon the primary voltage to which it is connected. Accordingly, its voltage ratio varies considerably, as there is huge variety of system voltages throughout the world.Typically a VT's secondary voltage is standardised at 110 V which will match the full-scale deflection of a voltmeter connected to it (although it can also supply protective relays), while its primary voltage is then matched to the voltage of the system to which it is connected: in the UK, for example:11-kV:110 V33-kV:110 Vetc.
How do i convert from 380 volts to 220 volts?
If these are the exact voltages that you need you will need an auto transformer to obtain these voltages. If these voltages are nominal voltages and are of a three phase four wire configuration, the 220 voltage can be obtained from the three phase legs to the neutral (ground) connection. The equation to use is 400/1.73 = 231 volts.
What is meaning of 9v-0-9v transformer?
It is kind of transformers called center-tap transformer its main function is to transform primary voltage to 2 secondary voltages or vice versa. In your statement the transformer will convert the input voltage to 2 voltage each is 9v or the opposite it will convert the 2 input voltages with each 9v to a certain value depending on the turns ratio of the transformer.
Can a distribution transformer be used as a potential transformer?
I'm not quite sure what you mean by a "potential transformer", but I look at it this way: The transformer isn't aware of the purpose to which you're putting it, so no matter what you call the function, the transformer continues to perform it ... transforming voltages and impedances in proportion to the turns ratio, and currents in proportion to its inverse.
How do you calculate the transformer turns ratio?
For an ideal transformer, the voltage ratio is the same as its turns ratio.
What are taps for in a transformer?
The ratio of windings between a primary and secondary in a transformer govern the output voltage. Multiple taps are connections to various points in the coil effectively changing the winding ratios to get multiple voltages from the same transformer. Taps can be on the primary, secondary or both to provide a more versatile transformer.
