Motors And Generators Flashcards Preview

RadPhy > Motors And Generators > Flashcards

Flashcards in Motors And Generators Deck (26):
1

Converts electrical energy into motion

Electric motors

2

Flemings left hand rule is for ?

Electric motors

3

Direction of the magnetic field (N-S)

First finger

4

Direction of current (positive to negative)

Second finger

5

Movements of the wire

Thumb

6

Used to switch the input of certain AC and DC machine

Commutators

7

Conducts current between stationary wires and moving parts.

Most commonly in a rotating shaft

Brush

8

Measure of how much a force acting on an object causes that object to rotate

Torque

9

Has a coil of wire that can rotate in a magnetic field

Simple DC motor

10

Conversion of electrical to mechanical energy

It is driven by alternating current

AC motor

11

2 components of AC motor

Stator
Rotor

12

Stationary electrical component

Stator

13

Rotating electrical component

Rotor

14

Other word for electric generator

Dynamo

15

Machine that converts mechanical energy to electricity

Electric generators

16

Right hand rule is for?

Generator effect

17

Direction of the magnetic field (RHR)

Fingers

18

Direction of motion of the wire (RHR)

Thumb

19

Direction of the emf (RHR)

Palm

20

Emf means

Electromotive force

21

A moving charge in a magnetic field results in a force on the wire

Generator effect

22

Converts motion to electricity

DC motor

23

AC generator uses

Two slip ring commutators

24

Electromotive force is a function of

Magnetic field( B)
Length of wire (L)
Speed of wire (v)

25

Extracts energy from a fluid flow and converts it into useful work

Turbine

26

Produced with heat from the combustion of fossil fuels or nuclear fissior

Steam turbines