Answer / trilochan

since the gain is calculated by the formula
20log|A|=20log|vout/vin| so, when A=0.707 or vout=70.7% of
vin then only we will get the gain as 20log|0.707|=
-3db. so,3db down point is 0.707 as at this point (i;e
0.707)we get the gain to be -3db which is 3db down to the
point zero where gain A=1(i;e 20log|1|=0).

Answer / naveen

value of 3db is taken at half power points in operation..
ex in antenna charactristics,an for filter characteristics..
power at this 3db level is half..
and its value v used to calculate is 1/root2=.707

The Entropy of the source is maximum when the symbols are...................?

0 Answers   BSNL,

---

In which of the following is an operational amplifier (op-amp) used? a. Oscillators b. Filters c. Instrumentation circuits d. All of the above

4 Answers  

---

how a log ratio amplifier works?

0 Answers  

---

Guys I am in DILEMMA.. plz HELP!!! Guys, I am engineering graduate in ECE from Banglore(VTU). I am working as Tech support engr, in one of the mnc. Now I am worrying about my future, like should I continue in this (fedup with night shipts) or shall I do other domain courses (like software testing, SAP, JAVA )(?). If I do CCNA then is it gonna help me with the tech support engr and in future(?){if I get handsome bucks after doing the CCNA, then I can continue with the night shipts and tech support} But I dont know if it is going to happen(please suggest). Is the technical support will join to the Network engineer post in future(any way)? Will the pay become as like software in future? Please help!!!! Thank you

2 Answers  

---

what is the difference bet 4 wire transmiiters and 2 wire transmitters

0 Answers   Vacmet,

---

send me the bhel apprentice training written test model question papers

4 Answers   Bhel, TATA,

---

What is sweep time?

0 Answers  

---

on what basis hardware and software interrupts are defined

5 Answers  

---

Explain the difference between a multiplexer and encoder?

0 Answers  

---

Explain what is the tri state of a signal?

0 Answers  

---

i want to know basic electronics and commmunication question

2 Answers  

---

Why does sidebands vl come in case of analog modulation?

0 Answers  

---