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Control Systems
A unity feedback control system has forward loop transfer function as e-Ts/s(s+1). Its phase value will be zero at frequency ω1. Which of the following equations should be satisfied by ω1?
Tω1 = tan(ω1)
ω1 = cot(Tω1)
ω1 = tan(Tω1)
Tω1 = cot(ω1)
Tω1 = tan(ω1)
ω1 = cot(Tω1)
ω1 = tan(Tω1)
Tω1 = cot(ω1)
Answer
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Related Question
Control Systems
Based on relation between the arm impedances the filters can be categorized into how many types?
Not classified at all.
2.
3.
4.
Not classified at all.
2.
3.
4.
Answer
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Control Systems
Poles and zeros are arranged alternatively on negative real axis, then type of network is/are
Both 2 and 3.
RL network.
LC network.
RC network.
Both 2 and 3.
RL network.
LC network.
RC network.
Answer
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Control Systems
The open loop transfer function of a unity feedback system is given by G(s) = 1/(s+2)². The closed loop transfer function will have poles at
-2+j,-2-j
-2,-1
-2,-2
-2,2
-2+j,-2-j
-2,-1
-2,-2
-2,2
Answer
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Control Systems
Find the conditions for the system to be stable?
Gain margin is negative but phase margin is positive
Gain margin and phase margins are positive
Gain margin and phase margins are negative
Gain margin is positive but phase margin is negative
Gain margin is negative but phase margin is positive
Gain margin and phase margins are positive
Gain margin and phase margins are negative
Gain margin is positive but phase margin is negative
Answer
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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
RLC circuit.
LC circuit.
RL Circuit.
RC circuit.
RLC circuit.
LC circuit.
RL Circuit.
RC circuit.
Answer
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