Question

The zero stability of vibrating condenser amplifier type pH meter is much better than a direct coupled amplifier.

(a) True

(b) False

The question was posed to me in a job interview.

I would like to ask this question from pH Meters topic in section pH Meters and Ion Analysers of Analytical Instrumentation

Answer 1

Right choice is (a) True

For explanation I would say: The zero stability of vibrating condenser amplifier type pH meter is much better than a direct coupled amplifier. The capacity can be changed by vibrating one of its plates.