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Lemur [1.5K]
3 years ago
6

Which is part of an AC generator?

Physics
2 answers:
raketka [301]3 years ago
8 0

Armature is part of an AC generator

Answer: Option A  

<u>Explanation:  </u>

Armature that revolves between two poles of magnet in an ac generator and plays a prime role in converting mechanical energy into electrical. An AC generator works on the principles of electromagnetic induction.  

When the armature rotates in between two magnets facing each other with opposite polarities, it rotates on the axis which is perpendicular to the magnetic field's direction.

With this, an electromotive force (emf) is induced in the armature and thus, the electric current flows through the rings to the wires and we get an ac current. Hence, the prime role in producing the ac current in the generator is done by the armature and its rotatory motion.

Katen [24]3 years ago
6 0

There is no such thing as an AC Generator, if its a generator, its DC. I think you are talking about an AC Alternator, in which case the answer would be -wrong answer, deleted-

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Scientific work is currently underway to determine whether weak oscillating magnetic fields can affect human health. For example
iragen [17]

Given Information:

Magnetic field = B = 1×10⁻³ T

Frequency = f = 72.5 Hz

Diameter of cell = d = 7.60 µm = 7.60×10⁻⁶ m

Required Information:

Maximum Emf = ?

Answer:

Maximum Emf = 20.66×10⁻¹² volts

Explanation:

The maximum emf generated around the perimeter of a cell in a field is given by

Emf = BAωcos(ωt)

Where A is the area, B is the magnetic field and ω is frequency in rad/sec

For maximum emf cos(ωt) = 1

Emf = BAω

Area is given by

A = πr²

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A = π(7.60×10⁻⁶/2)²

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8 0
3 years ago
Z. A force that gives a 8-kg objet an acceleration of 1.6 m/s^2 would give a 2-kg object an
Paladinen [302]

Answer:

\boxed {\boxed {\sf D.\ 6.4\ m/s^2}}

Explanation:

We need to find the acceleration of the 2 kilogram object. Let's complete this in 2 steps.

<h3>1. Force of 1st Object </h3>

First, we can find the force of the first, 8 kilogram object.

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F=m \times a

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F= 8 \ kg * 1.6 \ m/s^2

Multiply.

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\frac {12.8}{2}\ m/s^2=a

6.4 \ m/s^2=a

The acceleration is 6.4 meters per square second.

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