Applications of Electromagnetic Induction

Question 1

What parts are found in an electric generator? Select 4 options.an armaturea batterya permanent magnetan electromagnetbrushesslip rings

Revolt · Accepted Answer

an armature; a permanent magnet; brushes; slip rings

Question 2

Which component is found only in electric generators and not in electric motors?

Revolt · Accepted Answer

slip rings

Question 3

In a step-down transformer, which describes the primary winding compared with the secondary winding?

Revolt · Accepted Answer

higher voltage and more coils of wire

Question 4

How does an electric generator work?

Revolt · Accepted Answer

The axle rotates the armature in the magnetic field of a permanent magnet, which induces an electric current.

Question 5

The voltage across the primary winding is 350,000 V, and the voltage across the secondary winding is 17,500 V. If the secondary winding has 600 coils, how many coils are in the primary winding?

Revolt · Accepted Answer

12,000 coils

Question 6

Which best describes the steps involved in the operation of an electric generator?

Revolt · Accepted Answer

The electric current passes from the slip rings, through the brushes, and to the collection device.

Question 7

The voltage across the secondary winding is 10,000 V, and the voltage across the primary winding is 25,000 V. If the primary winding has 200 coils, how many coils are in the secondary winding?

Revolt · Accepted Answer

80 coils

Question 8

Which is an important step in how an electric motor uses magnetic force to produce motion?

Revolt · Accepted Answer

As the north pole of the electromagnet nears the south pole of the permanent magnet, the current reverses and the poles of the magnets then repel.

Question 9

Elena makes a table to organize the functions of electric motor components.Which functions belong in the cells marked X and Y?

Revolt · Accepted Answer

X: Allows current to flow into the commutatorY: Conducts current to the armature and reverses direction of current

Question 10

The voltage across the primary winding is 6000 V. If the primary winding has 50 coils and the secondary winding has 20 coils, what is the secondary voltage?

Revolt · Accepted Answer

2400 V

Applications of Electromagnetic Induction Answers

More from this Course

TRY EDGENUITY HACKS