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Control Systems

Control Systems
The characteristic equation for closed loop system is given as . The value of k for which the system becomes just stable is

 2
 6
 4
 8

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Control Systems
Electrical analogous quantity for spring element (K) in force-voltage analogy is

 1/C
 C
 L
 R

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Control Systems
A system has poles at 0.01 Hz, 1 Hz and 80 Hz; zeros at 5 Hz, 100 Hz and 200 Hz. The approximate phase of the system response at 20 Hz is

 180°
 90°
 -90°
 -180°

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Control Systems
A box which tells the effect of inputs on control sub system is known as

 Logical box.
 Decision box.
 State box.
 Data Box.

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Control Systems
Consider a network function H(s) = 2(s+3)/{(s+2)(s+4)}. What is the steady state response due to step input?

 1
 4/3
 1/2
 3/4

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Control Systems
The system having characteristic equation is used to be an oscillator. What is the value of k?

 1
 4
 3
 2

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