Correct answer
D. principal axis
Explanation
principal axis is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
In full wave rectification the output D.C. voltage across the load is obtained for_____________?
The product of the frequency and time period is equal to_________________?
The number of significant figures in the length of a bar 6200mm measured by meter rod is_______________?
Minimum number of communication satellites required to cover the whole earth is______________?
In multimode step index fibre the refractive index of core and cladding is____________?
Steradian is the SI unit of________________?