Quora has a relatively strong filter of what they consider to be 'spam', so it is imperative that each account you create and use look authentic and personable. There is an app called 'Rambox Pro' that allows you to manage multiple unique accounts from different proxy servers in one place, which can potentially help you manage several Quora accounts from one dashboard.
I am directly managing a team of brand ambassadors for https://www.mysticsense.com/ and have been using Quora and other platforms with relative success so far. This has given me direct experience with the Quora moderation system. I hope this answer helps you as well.