what is electromagnetism?what is the principal of electromagnetic crane?
Whenever a coil is moved with a magnet inside(fixed) or the magnet is moved with the coil fixed,current flows through the coilThis phenomenon is called as electromagnetismIn other words an alternating mangetic field is always associated with the current and vice versaAn electromagnetic crane has an electromagnet(coil in which current is passed).When switched ON the alternating current flowing through the coil creates a magnetic field(which lifts the object) and when the coil circuit is opened(switched OFF) the coil immediately losses it's magnetic properties and hence drops the object(object being magnetic material).
how do you repair a rotted hole in an old tongue and groove ceiling bought house that was built in 56 and left empty for 4 years a leaky roof caused tongue and groove ceiling wood to rot and leave a 15 x 24 whole in ceiling joist are all ok .
rip down 1/4 plywood to fit between the ceiling joists glue them in place with constrution adhesive and run a bead of cauking along the edges to stop the foam from getting under the plywood.they can spray over the plywood with no problems.
She isnt truthfully one hundred years ancient she is eighty five and was once born March 12, 1923She desires to battle while she truns one hundredStephanie Mcmahon promised her that once she one hundred she would battle Stephanie's daughter Aurora Rose Levesque
