Question

What is the range of voltage fluctuations which can be taken care by an electronic unit in universal measuring instrument?

(a) 18% to 20%

(b) -10% to +50%

(c) -18% to +20%

(d) 10% to 50%

I have been asked this question in unit test.

My query is from Universal Measuring Instrument in section Linear Measurements of Engineering Metrology

Answer 1

Correct choice is (c) -18% to +20%

Easy explanation: An interrupted power supply is provided to the electronic unit by power supply unit. It takes cares from – 18 to +20% fluctuations of voltage.