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RadPhy > Motors And Generators > Flashcards

Motors And Generators Flashcards

1
Q

Converts electrical energy into motion

A

Electric motors

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2
Q

Flemings left hand rule is for ?

A

Electric motors

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3
Q

Direction of the magnetic field (N-S)

A

First finger

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4
Q

Direction of current (positive to negative)

A

Second finger

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5
Q

Movements of the wire

A

Thumb

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6
Q

Used to switch the input of certain AC and DC machine

A

Commutators

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7
Q

Conducts current between stationary wires and moving parts.

Most commonly in a rotating shaft

A

Brush

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8
Q

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

A

Torque

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9
Q

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

A

Simple DC motor

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10
Q

Conversion of electrical to mechanical energy

It is driven by alternating current

A

AC motor

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11
Q

2 components of AC motor

A

Stator

Rotor

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12
Q

Stationary electrical component

A

Stator

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13
Q

Rotating electrical component

A

Rotor

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14
Q

Other word for electric generator

A

Dynamo

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15
Q

Machine that converts mechanical energy to electricity

A

Electric generators

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16
Q

Right hand rule is for?

A

Generator effect

17
Q

Direction of the magnetic field (RHR)

A

Fingers

18
Q

Direction of motion of the wire (RHR)

A

Thumb

19
Q

Direction of the emf (RHR)

A

Palm

20
Q

Emf means

A

Electromotive force

21
Q

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

A

Generator effect

22
Q

Converts motion to electricity

A

DC motor

23
Q

AC generator uses

A

Two slip ring commutators

24
Q

Electromotive force is a function of

A

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

25
Q

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

A

Turbine

26
Q

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

A

Steam turbines

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