I wiped data of my Nexus 5 using TWRP manager using Advanced Wipe option. However, after rebooting the device is hanged at the initial “Google” screen.
What should be done? What step did I miss out?
I guess the system partition is also gone while wiping the Data.
You need to flash a ROM into the Nexus 5 to boot it again. Check the Nexus 5 forum for some ROM installation guides.