Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Physical Science > Ch. 11 > Flashcards

Ch. 11 Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
0
Q

What are the ring of coils surrounding the rotor called?

A

Stator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What are machines that convert electrical energy into rotary mechanical motion?

A

Motors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are connected to the circuit slip across the face of the commutator as it rotates under earth them?

A

Electrical brushes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is modeled using magnetic lines of force?

A

Magnetic field

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is a transformer that increases output voltage?

A

Step-up conductors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The removing of these causes the formation of a permanent magnet

A

External magnetic field

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is a machine that converts the energy of a moving fluid into rotational motion?

A

Turbine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the most common prime mover for commercial electrical generators?

A

Steam turbines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The location of the earths concentrated magnetic field lines are vertical at the earths surface

A

Magnetic North Pole

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are certain materials that lose all electrical resistance at extremely low temperatures?

A

Superconductors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Who were the first people to use magnetic compasses?

A

Chinese

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Who changes magnetism from superstition to science?

A

William Gilbert

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Magnetic lines of force point

A

Toward the source magnetic pole

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which of the following will not attract or repel each other?

A

A magnet and a stationary charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which of the following will induce a current in a nearby circuit?

A

A moving electromagnet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Most of the electricity we use in our homes is supplied by a

A

AC generator

16
Q

Geothermal energy generation uses what kind of turbine?

A

Steam

17
Q

Which of the following is a step-up transformer?

A

Fir coil– 7 wraps; second coil– 8 wraps

18
Q

The first practical use of natural magnets was navigations.

A

True

19
Q

William Gilbert was the first person to experiment with magnets.

A

False

20
Q

Magnetic fields interact with each other just like electric fields.

A

True

21
Q

It is possible for a magnet to have only one pole.

A

False

22
Q

The strongest magnets are made out of pure substances.

A

False

23
Q

Liquid oxygen and gaseous oxygen display different magnetic properties.

A

True

24
Q

Magnets strongly attract all metals.

A

False

25
Q

Natural magnets, such as lodestones, display ferrimagnetism.

A

True

26
Q

Diamagnetic materials do not contain dipoles.

A

False

27
Q

Temperature does not have strong affect on a ferromagnetic object.

A

False

28
Q

At the geographic North Pole, a compass will point south.

A

True

29
Q

A ferromagnetic material above its Curie temperature will behave like a paramagnetic material when it is place Ina magnetic field.

A

True

30
Q

A magnet moving back and forth in the center of a coil of wire produces direct current in the wire.

A

False

31
Q

A stator is a pair of solenoids.

A

True

32
Q

Generators can produce only alternating current.

A

False

Physical Science (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions