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Control Systems
If two blocks having gains A and B respectively are in parallel connection, find the resultant gain using block diagram reduction technique?
2(A+B)
A*B
A+B
A/B
2(A+B)
A*B
A+B
A/B
Answer
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Related Question
Control Systems
A linear time invariant system has an impulse response e2t for t > 0 . If initial condition are 0 and input is e3t, the output for t > 0 is
e2t + e3t.
e2t - e3t.
e5t.
e3t - e2t.
e2t + e3t.
e2t - e3t.
e5t.
e3t - e2t.
Answer
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Control Systems
Accurate and reliable output is possible with which of the following system?
Both 1 and 2
Closed loop control system
Open loop control system
None of these
Both 1 and 2
Closed loop control system
Open loop control system
None of these
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 negative
Gain margin is positive but phase margin is negative
Gain margin and phase margins are positive
Gain margin is negative but phase margin is positive
Gain margin and phase margins are negative
Gain margin is positive but phase margin is negative
Gain margin and phase margins are positive
Answer
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Control Systems
The transfer function of a plant is T(s) = 5/(s+5)(s² + 5 + 1). The second order approximation of T(s) using dominant pole concept is
1/(s² + 5 + 1)
1/(s+1)(s+5)
5/(s+1)(s+5)
5/(s² + 5 + 1)
1/(s² + 5 + 1)
1/(s+1)(s+5)
5/(s+1)(s+5)
5/(s² + 5 + 1)
Answer
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Control Systems
The open loop transfer function for unity feedback system is given by 5(1+0.1s) / (s(1+5s)(1+20s)) Find the steady state error for a step input of magnitude 10 is equal to
zero.
5.
2.
infinite.
zero.
5.
2.
infinite.
Answer
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