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Control Systems
Which of the following is/are the disadvantages of an open loop control system?
both 1 and 2.
None of these
Inaccurate.
Unreliable.
both 1 and 2.
None of these
Inaccurate.
Unreliable.
Answer
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Control Systems
The initial slope of Bode plot for a transfer function having no poles at the origin is
+10dB/decade.
0 dB/decade
-20dB/decade.
-10dB/decade.
+10dB/decade.
0 dB/decade
-20dB/decade.
-10dB/decade.
Answer
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Control Systems
Time constant is defined as the time taken by the response of the system to reach ----------- ?
100% of the final value
70.7% of the final value
63% of the final value
50% of the final value
100% of the final value
70.7% of the final value
63% of the final value
50% of the final value
Answer
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Control Systems
Consider a point S = -3 + j4 in the s-plane. Then for a system with the open loop transfer function ?
None of these
S is not on root locus
either 1 or 2
S is on root locus
None of these
S is not on root locus
either 1 or 2
S is on root locus
Answer
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Control Systems
The unit step error coefficient of a system with unity feedback is
0.
infinity.
1.
1/6.
0.
infinity.
1.
1/6.
Answer
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Control Systems
The transfer function of the system described by d²/dt²(y(t)) + 3d/dt(y(t)) + 2y(t) = 5u(t) with u(t) as input and y(t) as output is
5/s(s²+3s+2)
(s²+3s+2)/5
s(s²+3s+2)/5
5/(s²+3s+2)
5/s(s²+3s+2)
(s²+3s+2)/5
s(s²+3s+2)/5
5/(s²+3s+2)
Answer
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