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Control Systems
Which of the following is/are the disadvantages of an open loop control system?
Inaccurate.
Unreliable.
None of these
both 1 and 2.
Inaccurate.
Unreliable.
None of these
both 1 and 2.
Answer
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Related Question
Control Systems
A second order control system is defined by the following equation: 4 d²c(t)/dt² + 8 dc(t)/dt + 16 c(t) = 16 u(t) The damping ratio and natural frequency for this system are respectively
0.25 and 4 rad/s
0.50 and 2 rad/s
0.50 and 4 rad/s
0.25 and 2 rad/s
0.25 and 4 rad/s
0.50 and 2 rad/s
0.50 and 4 rad/s
0.25 and 2 rad/s
Answer
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Control Systems
The output of the system has an effect upon the input quantity, then the system is a
closed loop control system.
open loop control system.
either 1 or 2.
None of these
closed loop control system.
open loop control system.
either 1 or 2.
None of these
Answer
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Control Systems
When the input to a system was with drawn at t = 0, its output was found to decrease exponentially from 1000 units to 500 units in 1.386 sec. The time constant of the system is
0.693.
2.000.
0.500.
1.386.
0.693.
2.000.
0.500.
1.386.
Answer
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Control Systems
Differentiation of parabolic response is a -------------- response?
impulse
parabolic
step
ramp
impulse
parabolic
step
ramp
Answer
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Control Systems
The phase of lead compensator of the system G ( s ) = ( s + a ) / ( s + b ) is at its maximum at:
a / b.
√( a / b).
√( ab ).
ab.
a / b.
√( a / b).
√( ab ).
ab.
Answer
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