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Free download in PDF Control System Short Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
41
In a system zero initial condition means that
[A]
The system is at rest and no energy is stored in any of its components
[B]
The system is working with zero stored energy
[C]
The system is working with zero reference signal
[D]
None
Answer: The system is at rest and no energy is stored in any of its components
42
By which of the following the system response can be tested better ?
[A]
Ramp input signal
[B]
Sinusoidal input signal
[C]
Unit impulse input signal
[D]
Exponentially decaying signal
Answer: Unit impulse input signal
43
With feedback _____ increases.
[A]
system stability
[B]
sensitivity
[C]
gain
[D]
effects of disturbing signals
44
The term backlash is associated with
[A]
servomotors
[B]
induction relays
[C]
gear trains
[D]
any of the above
45
Is the reference input minus the primary feedback.
[A]
Manipulated variable
[B]
Zero sequence
[C]
Actuating signal
[D]
Primary feedback
46
From which of the following transfer function can be obtained ?
[A]
Signal flow graph
[B]
Analogous table
[C]
Output-input ratio
[D]
Standard block system
Answer: Signal flow graph
47
The transfer function is applicable to which of the following ?
[A]
Linear and time-in variant systems
[B]
Linear and time-variant systems
[C]
Linear systems
[D]
Non-linear systems
Answer: Linear and time-in variant systems
48
A signal other than the reference input that tends to affect the value of controlled variable is known as
[A]
disturbance
[B]
command
[C]
control element
[D]
reference input
49
Signal will become zero when the feedback signal and reference signs are equal.
[A]
Input
[B]
Actuating
[C]
Feedback
[D]
Reference
50
The transient response of a system is mainly due to
[A]
inertia forces
[B]
internal forces
[C]
stored energy
[D]
friction
51
Mass, in force-voltage analogy, is analogous to
[A]
charge
[B]
current
[C]
inductance
[D]
resistance
52
In thermal-electrical analogy charge is considered analogous to
[A]
heat flow
[B]
reciprocal of heat flow
[C]
reciprocal of temperature
[D]
temperature
53
In force-voltage analogy, velocity is analogous to
[A]
current
[B]
charge
[C]
inductance
[D]
capacitance
54
The viscous friction co-efficient, in force-voltage analogy, is analogous to
[A]
charge
[B]
resistance
[C]
reciprocal of inductance
[D]
reciprocal of conductance
55
In liquid level and electrical system analogy, voltage is considered analogous to
[A]
head
[B]
liquid flow
[C]
liquid flow rate
[D]
none of the above
56
In electrical-pneumatic system analogy the current is considered analogous to
[A]
velocity
[B]
pressure
[C]
air flow
[D]
air flow rate
57
The temperature, under thermal and electrical system analogy, is considered analogous to
[A]
voltage
[B]
current
[C]
capacitance
[D]
charge
58
The capacitance, in force-current analogy, is analogous to
[A]
momentum
[B]
velocity
[C]
displacement
[D]
mass
59
Which of the following is the input to a controller ?
[A]
Servo signal
[B]
Desired variable value
[C]
Error signal
[D]
Sensed signal
60
In a system low friction co-efficient facilitates
[A]
reduced velocity lag error
[B]
increased velocity lag error
[C]
increased speed of response
[D]
reduced time constant of the system
Answer: reduced velocity lag error
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