Question :
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
Answer : B
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
Answer : B
Description :
Related Questions - 1
A high quality CAD system uses the following for printing drawing and graphs
A) Dot matrix printer
B) Digital plotter
C) Line printer
D) All of the above
Related Questions - 2
What is the date when Babbage conceived Analytical engine
A) 1642
B) 1837
C) 1880
D) 1850
Related Questions - 3
Which of the following is not processing ?
A) arranging
B) manipulating
C) calculating
D) gathering
Related Questions - 4
Computers with 80286 microprocessor is
A) XT computer
B) AT computers
C) PS/2 computer
D) None of above
Related Questions - 5
Which statement is valid about computer program?
A) It is understood by a computer
B) It is understood by programmer
C) It is understood user
D) Both A & B