In the last lab, we learned how an AC electromagnetic field can produce circulating eddy currents...

In the last lab, we learned how an AC electromagnetic field can produce circulating eddy currents within a bulk conductor, such as a ferromagnetic core inside a coil. These eddy currents require energy to produce, and therefore cause efficiency losses in some devices. How do we reduce eddy current losses in transformers?

	a.	Eddy current losses are reduced by using transformer coils of special wire.
	b.	Rather than solid metal, transformer cores are made from thin, ferromagnetic laminations.
	c.	A reduction in energy losses is important to transformer design.
	d.	Eddy currents only circulate in a vertical plane, so they are reduced by mounting the transformer on its side.
	e.	The ferromagnetic core of the transformer is covered with a non-conductive coating.

Expert Solution

genius_generous answered 1 year ago

Faradays Electromagnetic Lab – AC/DC Current and Electromagnetism Electromagnet 1. What happens to the speed of...

Faradays Electromagnetic Lab – AC/DC Current and Electromagnetism Electromagnet 1. What happens to the speed of the current as you adjust the voltage? 2. What happens to the magnetic field as you adjust the number of loops? 3. What happens to the magnetic field when you switch to AC voltage? Transformer 1. Why doesn’t the transformer work with DC voltage? 2. What five things can you adjust to get the highest maximum voltage? Generator 1. What does RPM stand for?...

Q1: Explain under what circumstances eddy currents occur, and what is their direction. Q2: Explain how...

Q1: Explain under what circumstances eddy currents occur, and what is their direction. Q2: Explain how magnetic braking works. Q3: Define magnetic flux. What, if anything is flowing? Q4: Accurately describe Lenz's rule and give an example. Q5: If a MRI experiences the current breakdown over a period of 0.2 seconds, meaning, the magnetic field drops from 3 T to 0, what currents can one expect in patient's body? Cf. Example 30.9

How can people skills be learned? Once learned, do they last? Why or why not? Finally,...

How can people skills be learned? Once learned, do they last? Why or why not? Finally, is it important for management to have people skills? Why or why not?" Provide several examples

How can we control the speed of Synchronous an AC Generator and give me a picture...

How can we control the speed of Synchronous an AC Generator and give me a picture of Synchronous an AC Generator regarding of what you are planning to say about controlling the speed? Give me details as much as you can.

(Practical magnetism) As we will see in lab, the magnitude ?? of the magnetic field of...

(Practical magnetism) As we will see in lab, the magnitude ?? of the magnetic field of a permanent magnet drops with distance d so that ?? ∝ 1/? 2 when d is less than the size of the magnet (where you “feel” only the closest pole) but ?? ∝ 1/? 3 farther away (where both poles “blur together” and the field is weaker). (a) Could a coin-sized magnet in your wallet or purse erase the magnetic strip on your credit...

4. A monopolist can produce at constant average and marginal costs of AC = MC =...

4. A monopolist can produce at constant average and marginal costs of AC = MC = 10. The firm faces a market demand curve given by P = 100 - Q. (a) Calculate the profit-maximizing level of output and price for the monopolist. Also calculate the monopolist's profit. (b) Assume this industry suddenly becomes perfectly competitive. Calculate the price and industry output if this industry is perfectly competitive. (c) Calculate the deadweight welfare loss that the monopoly in (a) imposes...

How can we shield any apparatus from an electric field?

In class, we learned that the electric field produced by a large, thin sheet of metal...

In class, we learned that the electric field produced by a large, thin sheet of metal with a uniform distribution of charge is E=k2(pi)(Q/A)R^ where an area A has total charge Q and R^ point away from the sheet. Two very large, very thin sheets of metal are parallel to each other as shown below end-on. Both sheets are charged; sheet A has +1 nC for each 1m^2 of area and sheet B has -2nC for each 1m^2 of area Determine the...

Although contracts are generally enforceable, last week we learned that there is an exception to this...

Although contracts are generally enforceable, last week we learned that there is an exception to this general rule. In particular, the law will protect minors from the enforcement of contracts that may not be in their best interests. As such, business may not be able to enforce contracts that they enter into with minors. Does this seem fair? From whose point of view?

how can we utilize nursing informatics more within the nursing field?

Question