Q:

When does Azure AD generate a new access token in implicit grant flow, (no refresh token)

Say we have a valid access token and again request for an access token, does Azure give a new token or return the same valid token.

Say we have a  valid token for 1hr and it is about to expire in 1 min, and  if we request for a new token , does AD generate a new token ?
Can we configure these settings in Azure AD, say for every token request it should generate a new token even the existing token is valid or can we configure that if  a new token is requested which is about to expire in a minute generate a new token

A:

The answer to all your three questions is:
Azure AD generates a new access token every time it is asked for an access token. 

