Ac Generator |

AC Generators?

Sunday, October 24, 2010

An AC-generator consists of 100 turns of wire of area 0.090 meters squared and total resistance 12*pi Ohms. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced current. a. 30 b. 90 c. 45 d. 60

physics help please! how to find the maximum induced emf? and the maximum induced current?

Monday, October 11, 2010

1 Comment

if…… The AC generator consists of N = 8 turns of wire each of area A = 0.107 m ^2 and total resistance 14.8 Ω. The loop rotates in a magnetic ﬁeld B = 0.374 T at a constant frequency of 43.3 Hz. How could I find the maximum induced emf? in units of V. [...]

Find the maximum induced emf and current.?

Wednesday, October 6, 2010

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An ac generator consists of 40 turns of wire with an area of 0.12 m2. The loop rotates in a magnetic field of 0.118 T at a constant frequency of 70.0 Hz. The generator is connected across a circuit load with a total resistance of 25 Ω. (a) Find the maximum induced emf. (b) Find [...]

Electromagnetic induction question?

Monday, September 20, 2010

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A generator is constructed by placing a coil of wire in a magnetic field. The coil is rotated in a clockwise direction in the magnetic field at a constant rate to induce a current in the wire. If the coil of wire is rotated in a counterclockwise direction at the same constant rate, which of [...]

Need help with some physics work please.?

Sunday, September 19, 2010

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You are requested to design a 70.0 Hz ac generator whose maximum emf is to be 5440 V. The generator is to contain a 160 turn coil whose area per turn is 0.85 m2. What should be the magnitude of the magnetic field in which the coil rotates?

Physics: Solenoid/ Generator question?

Sunday, August 8, 2010

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Suppose that you wish to construct a simple ac generator with an output of 12 V maximum when rotated at 60 Hz. A magnetic field of .050 T is available. If the area of the rotating coil is 100 cm^2, how many turns are needed?

8. Physics Test Open Response on Fluz, Faraday, Lenz, and Generators (simple ac generator)?

Friday, July 23, 2010

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What is the orientation of the armature loop in a simple ac generator when the following is true. Explain your reasoning for each situation, and discuss why they do not occur at the same orientation. (a) the value of the emf is a minimum (b) the value of the magnetic flux is a minimum Hi! [...]

Which of these simple setups of an AC electric generator is most common? Three choices, 10 points? Take 2?

Sunday, July 18, 2010

3 Comments

I am researching AC electric generators, and have seen three different descriptions for the simple design. So I written these three choices up myself, and want to know which is most common: A. Wire windings as stator, more coils of wires as rotor. Current fed to rotor, become electromagnet and produces magnetic field, rotates (through [...]

What is the most common setup for an AC electric generator? Two choices, 10 points?

Monday, July 12, 2010

2 Comments

I have made these two choices up myself, as I know it should be either one of these but I don’t know which one… A. Stator windings, coils of wires as rotor. Current fed to rotor, become electromagnet and produces magnetic field, rotates (through heat, wind etc) and induces current in stator windings which AC. [...]

What is the major difference in construction between an AC generator and a DC generator?

Wednesday, June 16, 2010

1 Comment

Is it in the number of coils? For an AC generator, how does the coil continually rotate up and back down again? Does it have to do with force from a magnetic field? Any diagrams helpful. Thanks.