Answer / marudhu

3 dB implies 1/2 the power and since the power is
proportional to the square of voltage, the voltage will be
0,707 of the passband voltage.

sqrt(0.5) = 0.707

Answer / 10dell

db is relative scale
3db down scale implies that Pout/Pin = half
means output power is half
and below this half power the output is no loger useful,and only the output above 3db scale is cosidered
so we take the range which is defined by 3db line as bandwidth
according to this we can define bandwidth as the range of acceptabe output

what is that functionality of a relay? draw aconnection for relay?

1 Answers  

---

sir please provide me the previous technical papers for hpcl writtien exam

0 Answers  

---

how to answer for the question what is your strength and weakness?

0 Answers   Ericsson,

---

"11101111" when that bit oriented message transmitting from sender to receiver.how is it calculate parity bit and how is it show bit stream that would be transmitted..by even parity error detection scheme..pls send me an answer..very important,,

0 Answers  

---

what are the basic logic elements?

0 Answers  

---

---

Are You Want to Make a Career in Telecom Sector?

1 Answers  

---

Is a hole a fundamental particle in an atom?

0 Answers  

---

Is M-ary PSK bandwidth efficient or power efficient

0 Answers   CUTM Centurion University of Technology and Management,

---

how to know what resistance is required to stabilse the ckt performance

0 Answers  

---

describe the timing circuit of 8085 mpu?

0 Answers   Vodafone,

---

What is op-amp?

0 Answers  

---

what is the wireless access subscriber unit(WASU) and how does it work?

0 Answers  

---