103F Emf Flashcards
EMF PRODUCTION TYPES
Chemical, heat, pressure, light,magnetism,electrostatics
If Battery is Dead it is Blanced
True
Connecting various electrodes in different configurations creates batteries of different voltage ?
True
Emf producing with Heating junction of Two dissimilar metals is called SEEBECK EFFECT
True
Pressure ( Push electricity) to produce electricity [emf] is Called PIEZOELECTRICITY. Tq
True
Solar Light is electromagnetic radiation
,TQ,
and it’s a form of energy
True
Magnetic ability to attract magnetic material .Magnets affect material in varying degrees …..tq
True
Magnetic moment in a group of atoms Align it’s a (Magnetic Domain)….tq
True
There is a temporary magnet
True eg coil
Hvac/R we use temperature magnetic in
Relays, Contactors, control valve and motors
Permanent magnetic in a natural state in LODESTONE
True
Two Behaviors of line of forces of magnetic field
Repel and Attract
The Symbol B represents Flux density
True
Permeability is the ability of material to magnetic lines of forces as compared to Air .
True
Soft iron has high permeability
True
