Download Aptitude Crack
img not found img not found

Digital Signal Processing

Q1:

In a 4-bit R/2R ladder digital-to-analog converter, because of negative feedback, the operational amplifier keeps the inverting (minus) input near ________.

A 5 volts

B zero volts

C a voltage determined by the binary weighted input

D none of the above

ANS:B - zero volts

Positive input of OPAMP is grounded. So OPAMP gives negative feed back in such a way that its negative input is also ground and the differential signal is zero.



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.