F2 Shraddha Neha 12.12.2020 D12

The block diagram of a closed-loop control system is given figure. What is the type of this system?

This question was previously asked in
ESE Electronics 2011 Paper 2: Official Paper
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  1. Zero
  2. One
  3. Two
  4. Three

Answer (Detailed Solution Below)

Option 2 : One
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Detailed Solution

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Concept:

The Type of the system is the number of poles present at the origin.

The Order of the system is the total number of poles.

Ex: Transfer function \(G\left( s \right)=\frac{K}{{{s}^{2}}\left( 1+sT \right)}\)

The number of poles present at the origin = 2

So the type of the system = 2

And since the total number of poles = 3

So, the order of the system = 3

 

Analysis:

\(G\left( s \right)H\left( s \right) = \frac{2}{{s\left( {{s^2} + 2s + 2} \right)}}\) 

there is one pole at the origin, the type of the system is 1.

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