and can you receive more than one loan?
You can receive more than one loan under an MPN over a period of up to 10 years to pay your educational costs, as long as the school is authorized to use the MPN in this way and decides to do so.
and for unsubsidized loans?
Use this MPN for unsubsidized direct loans available to eligible graduate / professional students. You may also need to complete an MPN for Direct PLUS loans.