421080
AC Theory
- EMF
- e=Blv
- Magnetic flux density - B
- The length of the conductor in the magnetic field - l
- The velocity or speed of the conductor through the magnetic field - V
- e = Volts
- B = teslas
- l = metres
- v = metres/second
- Magnetic flux density - B
- Generation of an EMF
- Thumb - direction of motion
- First finger - Field
- Second finger - Current
- Second finger - Current
- First finger - Field
- Thumb - direction of motion
- e=Blv
- Connection of metres
- Ammeter
- In series with the circuit
- In series with the circuit
- Voltmeter
- In parallel with the system or load
- In parallel with the system or load
- Wattmeter
- Measures the amount of power
- Measures the amount of power
- Ohmmeter
- Measures the resistance
- Measures the resistance
- Ammeter
- Electro-magnetism
- Lines of flux
- Cannot cross
- Flow externally from North Pole to South Pole
- Cannot cross
- Magnets
- Like poles repel
- Unlike poles attract
- Like poles repel
- Maxwells screw rule
- The relationship between the direction
of the current flowing and the magnetic
field produced by that current
- The relationship between the direction
of the current flowing and the magnetic
field produced by that current
- Relays
- Solenoids
- Contactor
- Solenoids
- Lines of flux
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