electromagnetic crane is a type of crane with an electromagnetic lift.
Electromagnetic cranes are commonly utilized in lifting and moving various
scrap metals. It does not have the mechanical 'pincers' of a regular crane,
instead, it has a large flat magnet which draws the metallic materials to it.
The electromagnet contains an iron core with a
wire around it, and this wire is the medium by which the current travels. The
magnetic strength of an electromagnet relies on the number of turns of the wire
around the electromagnet's core, the current through the wire and the size of
the iron core. Increasing these elements will result in an electormagnet which
is significantly larger and stronger as compared to a natural magnet (which
explains the enormous size of the crane's magnet). For the electromagnet to be
turned off, the core must be made of soft iron. Therefore, turning on the
electricity will enable the magnet to work, and turning off the electricity
will be able to shut it down.