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Electrical Engineering
Control System
Quiz 1
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Q.1
Insertion of negative feedback in control system affects:
the transient response to vanish uniformly
the transient response to decay very fast
no change in transient response
the transient response decays at slow rate
Q.2
An increase in gain, in most systems, leads to
smaller damping ratio
larger damping ratio
constant damping ratio
none of the above
Q.3
Zero initial condition for a system means
input reference signal is zero
zero stored energy
ne initial movement of moving parts
system is at rest and no energy is stored in any of its components
Q.4
Which notation represents the feedback path in closed loop system representation
e(t)
c(t)
r(t)
s(t)
b(t)
Q.5
The initial response when tne output is not equal to input is called
Transient response
Error response
Dynamic response
Either of the above
Q.6
Mass, in force-voltage analogy, is analogous to
charge
current
inductance
resistance
Q.7
Which of the following will not decrease as a result of introduction of negative feedback?
instability
bandwidth
overall gain
distortion
Q.8
Which of the following are the not characteristics of the closed loop systems?
it does not compensate for disturbance
it reduces the sensitivity of plant-parameter variations
it does not involve output measurements
it does not has the ability to control the system transient response
Q.9
Conventional control theory is applicable to systems
siso
mimo
time varying
non-linear
Q.10
State space analysis is applicable even if the initial conditions are
zero
non-zero
equal
not equal
Q.11
Which among the following are the interconnected units of state diagram representation?
scalars
adders
integrator
all of the mentioned
Q.12
Which among the following plays a crucial role in determining the state of dynamic system?
state variables
state vector
state space
state scalar
Q.13
Which among the following constitute the state model of a system in addition to state equations?
input equations
output equations
state trajectory
state vector
Q.14
State model representation is possible using
physical variables
phase variables
canonical state variables
all of the mentioned
Q.15
Which mechanism in control engineering implies an ability to measure the state by taking measurements at output?
controllability
observability
differentiability
adaptability
Q.16
According to the property of state transition method, e0 is equal to
i
a
e-at
-eat
Q.17
Stability of a system implies that :
small changes in the system input does not result in large change in system output
small changes in the system parameters does not result in large change in system output
small changes in the initial conditions does not result in large change in system output
all of the above mentioned
Q.18
Real distinct and negative.
center
focus point
saddle point
stable node
Q.19
Real and equal but with opposite sign.
center
focus point
saddle point
stable node
Q.20
Pure imaginary pair:
centre
focus point
saddle point
stable node
0 h : 0 m : 1 s
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