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Control Systems

Control Systems
Angle of asymptotes for complimentary root locus is

 (2q)*180/P
 (2q)*180/(P-Z)
 (2q+1)*180/(P-Z)
 (2q+1)*180/P

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Control Systems
Which of the following is/are the advantages of a closed loop control system?

 both 1 and 2.
 The closed loop systems are less affected by noise.
 nether 1 nor 2.
 The closed loop systems are accurate.

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Control Systems
A proportional plus integral controller

 increases the stability of the system
 both 2 and 3
 has high sensitivity
 it increases rise time

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Control Systems
Angle condition for complimentary root locus or inverse root locus is

 ± (2q) 360°
 ± (2q + 1) 360°
 ± (2q + 1) 180°
 ± (2q) 180°

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Control Systems
Lowest critical frequency is due to zero and it may be present at the origin or nearer to the origin, then the type of network is

 LC circuit.
 RC circuit.
 RL Circuit.
 RLC circuit.

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Control Systems
Sparking between the contacts can be reduced by inserting

 a resistor in the line.
 a reactor in the line.
  a capacitor in parallel with the contacts.
 a capacitor in series with the contacts.

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