What discount rate is most appropriate for net present value calculations of large scale projects? Of small

Question:

What is most appropriate for calculations of large scale projects? Of small projects? Of the quantity of inventories to hold? Net Present Value
What is NPV? The net present value is an important tool for capital budgeting decision to assess that an investment in a project is worthwhile or not? The net present value of a project is calculated before taking up the investment decision at... Discount Rate
Depending upon the context, the discount rate has two different definitions and usages. First, the discount rate refers to the interest rate charged to the commercial banks and other financial institutions for the loans they take from the Federal...