NAVEDTRA 14174A, NEETS Mod. 2, Ch. 2 Flashcards Preview

Luftfart Elektronik Techniker > NAVEDTRA 14174A, NEETS Mod. 2, Ch. 2 > Flashcards

Flashcards in NAVEDTRA 14174A, NEETS Mod. 2, Ch. 2 Deck (15)
Loading flashcards...
1

Which electrical circuit characteristic opposes the starting, stopping, or a change in value of current?

Inductance

2

What symbol is used for inductance?

L

3

What is the basic unit of inductance?

Henry (H)

4

Which mass characteristic opposes a change in velocity?

Inertia

5

What is the difference of potential or voltage which exists between two points in an electrical circuit called?

Electromotive force

6

What is the EMF induced in the conductor carrying the current called?

Self-induced

7

Which law states that “The induced EMF in any circuit is always in a direction to oppose the effect that produced it.”?

Lenz’s Law

8

What can a conductor be formed into in order to increase inductance?

Loop/Coil

9

What are inductors classified according to?

Core type

10

An inductor has an inductance of 1 henry if an emf of 1 volt is induced in the inductor when the current through the inductor is changing at the rate of how many amperes per second?

1

11

What are the coils said to have if they are so positioned with respect to each other so that all of the flux of one coil cuts all of the turns of the other?

Unity coefficient of coupling

12

What is the requirement or the current in an inductor to increase to 63.2 percent of the maximum current or to decrease to 36.8 percent of the maximum current known as?

Time constant

13

Copper, Hysteresis, along with what else are the main power losses in an inductor?

Eddy-current

14

Which type of inductor power loss is due to power that is consumed in reversing the magnetic field of the core each time the current direction changes?

Hysteresis

15

Which type of inductor power loss is due to core heating caused by circulating currents induced in an iron core by the magnetic field of the coil?

Eddy-current