Final answer:
Taper dimensions are expressed by using symbols or powers of symbols that represent the base quantities, such as length and mass. Various units can be used to express these dimensions as long as they adhere to dimensional analysis constraints.
Step-by-step explanation:
The dimensions of a physical quantity are expressed by using symbols or powers of symbols that represent the base quantities. For example, the dimension of length is represented by the symbol L or L¹, mass by M or M¹, and time by T or T¹. When expressing taper dimensions, the dimensions of the object would be a combination of length and possibly other dimensions depending on the specific case. For example, if the taper is a cone, the dimensions would include length and radius. It is important to note that various units can be used to express the quantities involved, as long as they satisfy the constraints of dimensional analysis.