Why are vacuum tubes also called valves?
Because they can amplify the weak signals and make them strong
Because they can stop or allow the flow of current
Both of above
None of above
Answer : B
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View More Related Question
1) Who invented Slide Rules?
2) The proper definition of a modern digital computer is
An electronic automated machine that can solve problems involving words and numbers
A more sophistic and modified electronic pocket calculator
Any machine that can perform mathematical operations
A machine that works on binary code
View Answer
3) What is the meaning of "Hibernate" in Windows XP/Windows 7?
Restart the Computer in safe mode
Restart the Computer in hibernate mode
Shutdown the Computer terminating all the running applications
Shutdown the Computer without closing the running applications
View Answer
4) When was the company named IBM?
5) In a computer _____ is capable to store single binary bit.
