'be knowledgeable on' is correct and can be used in written English.
You can use it to describe someone who is well-informed about a particular topic. For example: "John is knowledgeable on current economic trends and their potential implications."
Not many people my age watch the news, but I feel it's important to be knowledgeable on what's going on in the world.
We expect them to have a passion for London and be knowledgeable on any customer queries about the city and its accommodation no matter where they are based.
Lawyers working for the city needn't be experts on estate planning, intellectual property or entertainment law, but shouldn't they be knowledgeable on all court decisions affecting municipalities?
By inviting disabled people into conversations about disaster preparedness and response, investing in important equipment, and mandating that disaster response teams be knowledgeable on these issues, communities can reduce fatalities and offer a more humane and inclusive response to disasters.
Accordingly, health care providers and particularly physicians should provide such preventive counseling and be knowledgeable on these issues [ 7].
Purposive sampling was used to select four key informants who were considered to be knowledgeable on formal and informal health sectors, traditions and practices.
Gareth – an asexual man from Northeast England – says that, since coming out in 2011, he's only met one person who has been knowledgeable on asexuality to the point that they "don't think it is someone who can spontaneously reproduce with themselves or that it is someone who is incapable of having sex".
Gareth an asexual man from Northeast England says that, since coming out in 2011, he's only met one person who has been knowledgeable on asexuality to the point that they "don't think it is someone who can spontaneously reproduce with themselves or that it is someone who is incapable of having sex".
We either used our previous knowledge to locate the person knowing the institution view and/or being knowledgeable on clinical research governance, or we asked the heads of the institutions/departments to locate the right persons.
