Electronics and Communication Engineering - Communication Systems - Discussion

2. 

For attenuation of high frequencies we should use

[A]. shunt capacitance
[B]. series capacitance
[C]. inductance
[D]. resistance

Answer: Option A

Explanation:

Since Xc for high frequencies is low, the high frequencies are shunted to ground and are not transmitted.


Rahul Singh Gusain said: (May 3, 2014)  
It can be inductor also. It also stop high frequency by offering high inductance.

N. Sen said: (Aug 18, 2014)  
Why not inductor?

Sanjay said: (Dec 8, 2014)  
High frequency components are eliminated in LPF in it we place capacitance in shunt to the source.

Aiswarya Venugopal said: (Jun 15, 2015)  
Inductor block AC[high frequency], Capacitor pass AC.

Prabha said: (Jun 22, 2016)  
For highpass filter, we have the capacitor in series and shunt resistor.

Then why don't be the series capacitor?

Athira said: (Jul 5, 2016)  
High pass filter will pass the high frequency and attenuate the low frequencies, High frequency components are eliminated in LPF. In LPF the we have shunt capacitor.

Hemalatha said: (Feb 23, 2018)  
Why not be an inductor?

Smriti said: (Mar 19, 2018)  
Attenuation of high frequencies is done by Low pass filter and in low pass filter we use shunt capacitor. We generally don't use inductor because of it's bulky size and high cost.

Sateesh said: (Nov 9, 2018)  
Shunt capacitance can be said as band pass not attenuation. This way inductor can also be used.

Divya said: (Feb 27, 2019)  
If frequency increases reactance decreases both in parallel and series then why only shunt capacitance?

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