Final answer:
A capital projects fund covers construction of public infrastructure like libraries, civic centers, and fire stations, which are public investments meant to enhance public sector output.
Step-by-step explanation:
An example of a project that would be accounted for under a capital projects fund includes the construction of public infrastructure such as libraries, civic centers, and fire stations. Projects like the expansion of private corporations, research and development initiatives, and marketing and advertising campaigns do not fall under this category, as they are typically private sector activities. Managing public investments often requires balancing economic sense with political popularity, making cost-effectiveness challenging; such projects should benefit the public sector and contribute to raising output.