why the cutoff frequency is taken for 3dB and not other
values like 1 or 2 db???

Answer Posted / guru

Human ear can not distinguish between maximum and 3DB
frequency level. 3DB is maximum permitted level,more then
3DB results in noticeable change. It saves power.........

Is This Answer Correct ?    2 Yes 23 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is tristor?

639


hI, I AM A BE GRADUATE. WILL U LET ME KNOW WHAT TYPE OF OFFICER POSTS ARE AVAILABLE FOR MY QUALIFICATION IN SBI BANK? WHETHER THERE ARE ANY SCALE OF PAY DIFFERENCE FOR THE REST OF THE OFFICER POST AND THE POST THAT IS UNIQUE FOR ENGINEERS?

1617


Explain the importance of if in radio receiver?

574


sir,please send me the questions and syllabus for ongc technical assistant exam for electronics and comm

1908


Why is there a maximum limit of collector supply voltage for a transistor?

1266






Explain when a sample of germanium and silicon having same impurity density are kept at room temperature then resistivity of silicon will be higher than that of germanium, why?

664


what are the various modes of data transfer in 8085?

1635


is there any good institute in mumbai that provides good Automation courses ?

1520


What is meant by mcmurray inverter?

839


I am in need of question set of ONGC Electronics & Communication

2334


What do you mean by drift velocity and mobility of a free electron?

577


Describe the sampling theorem.

679


Why use -48v power to BTS

1656


write the expression for a multiple Pi section filter's ripple factor?

3896


please send previous years question papers of JuniorEngineer (ELectronics)in RRB.

1574