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
The basic operations performed by a computer are
A) Arithmetic operation
B) Logical operation
C) Storage and relative
D) All the above
Related Questions - 2
A computer consists of
A) A central processing unit
B) A memory
C) Input and output unit
D) All of the above
Related Questions - 3
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
Related Questions - 4
Which of the following is used as a primary storage device ?
A) Magnetic drum
B) Hard Disks
C) Floppy
D) All of above