What type of supply is being provided to the portative electromagnet?(a) only ac supply(b) only dc supply(c) ac and dc supply(d) ac or dc supplyI had been asked this question in a national level competition.I would like to ask this question from Types of Electromagnets in section Design of Electromagnets of Design of Electrical Machines

What type of supply is being provided to the portative electromagnet?(

1.	What type of supply is being provided to the portative electromagnet?(a) only ac supply(b) only dc supply(c) ac and dc supply(d) ac or dc supplyI had been asked this question in a national level competition.I would like to ask this question from Types of Electromagnets in section Design of Electromagnets of Design of Electrical Machines
Answer» Right option is (b) only DC supply Easy explanation: Portative electromagnets are ONE type of ELECTROMAGNET, which function as a HOLDING magnet. They operated usually from dc supply only.

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