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Is the ttU1lS ratio of a transfonner the same as the ratio of voltages across the transfonner?
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Is the turns ratio of transformer the same as the ratio of voltages across the transformer.why or why not?
plz give me answer the above question
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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.
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How do you determine ratio if only second voltage is given?
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How do you determine transformer turns ratio if the supply source and load is given?
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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.
Suppose in a circuit with 2 bulbs the resistance of bulb 1 is greater than that of bulb 2. how will the voltage across the two bulbs compare?
In a series circuit with two bulbs where bulb 1 has a greater resistance than bulb 2, the voltage across both bulbs will be different. The higher resistance bulb (bulb 1) will have a higher voltage drop across it compared to the lower resistance bulb (bulb 2) according to Ohm's Law (V=IR).
How do you explain current in Ohm's Law?
I=V/R, current = voltage divided by resistanceAnswerOhm's Law states that 'the current flowing through a conductor, at constant temperature, is directly proportional to the potential difference across the conductor'.Ohm's Law only applies when the ratio of voltage to current is constant over a wide range of voltages. If the ratio changes, then Ohm's Law does not apply.
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.
