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Control Systems

Control Systems
What is the type of closed loop system for the plant transfer function G(s) = k/s²(1+Ts) and with unity feedback?

 3
 1
 2
 0

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Control Systems
The characteristic equation of a control system is given below: The system is

 critical stable
 marginally stable
 unstable
 stable

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Control Systems
A open loop transfer function is given as G(s) = (s+2)/(s+1)(s-1). Find the number of encirclements about '-1+j0'?

 1
 3
 2
 0

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Control Systems
The impulse response of a linear system is e-t, (t > 0). The corresponding transfer function is

 1/s(s+1)
 1/s
 s/(s+1)
 1/(s+1)

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

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

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Control Systems
Find the Laplace transform for sinωt?

 1/s
 ω/(s²+ω²)
 s/(s²+ω²)
 1/s²

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