Question

Which of the following is the correct hydrometer reading equation?

(a) R = Rh’ + Cm ± CL – Cd

(b) R = Rh’ + cm + CL – Cd

(c) R = Cm ± Rm – Cd + CL

(d) R = Rh + Cm ± Cd + CL

I have been asked this question during an interview.

This interesting question is from Hydrometer Method topic in section Index Properties Determination of Geotechnical Engineering I

Answer 1

Correct option is (a) R = Rh’ + Cm ± CL – Cd

Easy explanation: According to the derived equation of hydrometer the equation is

R = Rh’ + Cm ± CL – Cd.