Question :

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


Computers with 80286 microprocessor is


A) XT computer
B) AT computers
C) PS/2 computer
D) None of above

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Related Questions - 2


Software in computer


A) Enhances the capabilities of the hardware machine
B) Increase the speed of central processing unit
C) Both of above
D) None of above

View Answer

Related Questions - 3


Which of the following is not an input device ?


A) OCR
B) Optical scanners
C) Voice recognition device
D) COM (Computer Output to Microfilm)

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Related Questions - 4


One millisecond is


A) 1 second
B) 10th of a seconds
C) 1000th of a seconds
D) 10000th of a seconds

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Related Questions - 5


What are the three decisions making operations performed by the ALU of a computer?


A) Grater than
B) Less than
C) Equal to
D) All of the above

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