Question

Stress components cannot be expressed in terms of __________

(a) Cartesian tensors

(b) Contra-variant tensors

(c) Covariant tensors

(d) Metric tensors

This question was addressed to me in an interview for job.

I'd like to ask this question from Numerical Methods topic in section Numerical Methods of Computational Fluid Dynamics

Answer 1

Correct answer is (d) Metric tensors

To explain: In general, Stress components are expressed in the Cartesian tensors form. It is also possible to define them in covariant or contra-variant terms. But they cannot be expressed in metric tensor. Metric tensors are used to transform covariant tensors into contra-variant tensors.