When fingerprinted in any state for any kind of license, will two felonies, expunged in CA be revealed?

Yes. The Criminal Index (CII) carries all arrests and convictions, even those "expunged." By the way, it's likely your felonies weren't "expunged" in California, as only a misdemeanor can be expunged. Likely there was another disposition of the felonies, such as allowing you to withdraw a plea after a term of probation and having them dismissed. The CII will still carry them.

You must tell the people about the felonies. There is no expungement in California.

ALL criminal records from every state, including arrests, charges, convictions, expungements, psychiatric commitments, fingerprints, DNA, etc. are kept by DOJ / FBI. They are accessible and reviewed in any background check. Expungement does NOT clear, 'remove', erase? or ?disappear? the conviction. It does change the record to show a 'conviction reversed and charges dismissed by expungement'. Whatever happened is fully detailed in the record. Lie on an application for licensing at risk of perjury charges. You must disclose the arrest and conviction in any questionnaire or application for certification or licensing by any government agency [medical, legal, educational, professional, law enforcement, security clearances, bonding, etc], for public office, and others. The licensing agency then will decide whether the nature of the past convictions and your record will bar you from licensing and employment in that field. An employer can then decide whether to hire or not.

Most likely they will. It will show what happened when the 1203 petition was granted but it will still stay at the DOJ and because of a State Licence involved I think it will show up.