In the national grid,what does the step up transformer do?

2 answers:

8 0

The power that's lost when current flows through anything is

(current)² times (resistance).

You can see that in order to minimize the power lost in transporting electrical
energy from one place to another, you'd want to make both the resistance of
the conductors and the current through the lines as low as possible.

The resistance is reduced by using heavier (fatter) conductors, and using
as much silver or copper in them as possible ... both very expensive.

Power = (current) times (voltage), so the way to reduce the current while
shipping the same power from place to place is to increase the voltage.
That's exactly what the transformer does ... it changes the voltage and
current, while keeping their product the same. It's used to step the voltage
up for transmission, in several steps from the generating station all the way
to the residential neighborhood, and then finally back down, on the pole
near your house.

amm18122 years ago

7 0

In the National Grid, the Step Up Transformer increases the amount of voltage that is passing through the grid at any one time. These are used at power stations, as without them, there would not be enough power to transport the electricity around the national grid.
Hope this helps :)

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Answer:

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A person, with his ear to the ground, sees a huge stone strike the concrete pavement. A moment later two sounds are heard from t

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Answer:

The impact occured at a distance of 2478.585 meters from the person.

Explanation:

(After some research on web, we conclude that problem is not incomplete) The element "Part A" may lead to the false idea that question is incomplete. Correct form is presented below:

<em>A person, with his ear to the ground, sees a huge stone strike the concrete pavement. A moment later two sounds are heard from the impact: one travels in the air and the other in the concrete, and they are 6.4 seconds apart. How far away did the impact occur? (Sound speed in the air: 343 meters per second, sound speed in concrete: 3000 meters per second)</em>

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