Question

What is the output voltage in a dual slope integrating type DVM?

(a) differential of the input

(b) multiple of the input

(c) integral of the input

(d) zero

The question was posed to me in an online quiz.

The question is from Dual Slope Integrating Type DVM topic in portion Electronic Instruments of Electrical Measurements

Answer 1

The correct option is (c) integral of the input

To explain: In a dual slope integrating type DVM, the output voltage is given by the integral of the input voltage.

where, Vin is the input voltage

       R1 is the series resistance

       t1 is the time for which the capacitor is charged.