- The aniline point test is used to determine the aromatic content of oils by measuring the lowest temperature at which equal volumes of oil and aniline can be mixe(D)
- Naphthalene content is generally not assessed through the aniline point test.
- Paraffin content and olefin content are also not determined by this test.
Conclusion:
The aniline point test is a qualitative method used to indicate the aromatic content of oils.
A closed-loop system has the characteristic equation given by: $ s^3 + k s^2 + (k+2) s + 3 = 0 $.
For the system to be stable, the value of $ k $ is:
A digital filter with impulse response $ h[n] = 2^n u[n] $ will have a transfer function with a region of convergence.