Home

Why are vacuum tubes also called valves?

A. Because they can amplify the weak signals and make them strong

B. Because they can stop or allow the flow of current

C. Both of above

D. None of above

Study and Earn Android App
Share this question with your friends

Correct Answer : B.


Please do not use chat terms. Example: avoid using "grt" instead of "great".

Submit
Load More..

Also checkout

Thermodynamics MCQ Rearrangement Set 7 MCQ Partnership MCQ Direction MCQ Rearrangement Set 13 MCQ Origin of Life and Organic Evolution MCQ C# Programming MCQ Rearrangement Set 4 MCQ Microsoft Excel MCQ Microsoft PowerPoint MCQ Stocks and Shares MCQ Ratio and Proportion MCQ