Q/A about power supply

I was asked by my teacher to produce a schematic diagram of a triple output power supply which supply output voltages of 15v
-15v and -5 v of not more than 15 component. After looking through different electronics forums and web page i manage to come out with this diagram. I just want to ensure that the circuit in the diagram will net me my desire voltage. Thanks
(meanwhile i will be writing a report)
 

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