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
Which of the following is not an input device ?
A) OCR
B) Optical scanners
C) Voice recognition device
D) COM (Computer Output to Microfilm)
Related Questions - 2
Mnemonic a memory trick is used in which of the following language ?
A) Machine language
B) Assembly language
C) High level language
D) None of above
Related Questions - 3
High density double sided floppy disks could store _____ of data.
A) 1.40 MB
B) 1.44 GB
C) 1.40 GB
D) 1.44 MB
Related Questions - 4
An integrated circuit is
A) A complicated circuit
B) An integrating device
C) Much costlier than a single transistor
D) Fabricated on a tiny silicon chip
Related Questions - 5
Which type of computers uses the 8-bit code called EBCDIC ?
A) Minicomputers
B) Microcomputers
C) Mainframe computers
D) Super computer