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Physics: What is the function of a transformer?

1.) What is the function of a transformer?a.) It is a device that can change the voltage of an AC supply.b.) It can change a low voltage supply into a high voltage supply or vice versa.c.) It is a device used mainly to change AC into DC.d.) A and B are correct.2.) What is the function of a transformer at a power station?a.) To convert DC into ACb.) To produce very high voltagesc.) To produce the currents in the power linesd.) None of the above.

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This Site Might Help You. RE: Physics: What is the function of a transformer? 1.) What is the function of a transformer? a.) It is a device that can change the voltage of an AC supply. b.) It can change a low voltage supply into a high voltage supply or vice versa. c.) It is a device used mainly to change AC into DC. d.) A and B are correct. 2.) What is the function
In your case, the frequency is so small that is not important. At high frequencies, the will be a frequency response of the transformer as the magnetic domains in the core cannot switch back and forth that fast; the already present magnetic hysteresis will increase substantially. You will have to consider phase and attenuation and possible harmonic generation at higher frequencies. Other than that, just go ahead and solve the problem the way you know.
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Sorry but I don't know about this
A transformer either steps-up or steps-down the voltage of an AC circuit at the cost or gain of current (PIV). They are used to enable electricity to travel very far distances. While a high current will also come with a reduction of power due to the resistance of the miles of wire, a low current with a high voltage will be affected very little (VIR). A transformer will convert the high current power from the power plant to low current and high voltage so that the electricity can reach further. When this high voltage reaches neighborhoods, it goes through multiple transformers to step it down to the conventional 120V power supply. Since transformers only work with alternating current, they have nothing to do with direct current. Therefore, question 1 is D and 2 is B.

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