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Control Systems
Force balancing equation for elastic element (K) is (where, x = displacement)
K d2x/dt2
None of these
K dx/dt
K *x
K d2x/dt2
None of these
K dx/dt
K *x
Answer
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Control Systems
A system has poles at 0.01 Hz, 1 Hz and 80 Hz; zeros at 5 Hz, 100 Hz and 200 Hz. The approximate phase of the system response at 20 Hz is
-90°
90°
180°
-180°
-90°
90°
180°
-180°
Answer
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Control Systems
For a unity feedback control system open loop transfer function then position error constant is
40.
0.
infinity.
20.
40.
0.
infinity.
20.
Answer
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Control Systems
The optimum values of damping ratio is --------------
0 to 2
0.9 to 1.1
0.3 to 5
0.3 to 0.7
0 to 2
0.9 to 1.1
0.3 to 5
0.3 to 0.7
Answer
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Control Systems
A function y (t) satisfies the following differential equation : Where, δ (t) is the delta function. Assuming zero initial condition and denoting the unit step function by u(t), y(t) can be formed as
e-tu(t).
etu(t).
et.
e-t.
e-tu(t).
etu(t).
et.
e-t.
Answer
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Control Systems
Lead compensator is used to improve ------------------
Steady state response
Both 1 and 2
Transient response
None of these
Steady state response
Both 1 and 2
Transient response
None of these
Answer
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